Gilson Snow Thrower service repair manual maintenance

Printed in U.S.A. Snowthrowers Gilson Brothers Company, Box 152, Plymouth, Wisconsin 53073 Gilson Brothers Company (Canada) Ltd., 3325 Orlando Drive, Mississauga, Ontario No. SM1201

GlLSON BROTHERS COMPANY, BOX 152, PLYMOUTH, WISCONSIN 53073 n SNOW THROWERS Page .............................. 4 H.P. Model 3-14 Set Up Maintenance & Lubrication General Operational Adjustments Service Manual 5 & 8 H.P. Friction Drive Model .............. 15-22 Set Up Maintenance & Lubrication General OperationalAdjustments Service Manual .................. 8 H.P. Gear Drive Model .23-37 Set Up Maintenance & Lubrication General Operational Adjustments Service Manual Refer to Service Bulletins for additional information

SNOW THROWER SERVICING 4 HP 18" Snow Thrower 5 HP 24" Snow Thrower Single Speed Forward With Reverse TABLE OF CONTENTS CHAPTER I Trouble Shooting CHAPTER II Adjustments Traction Clutch RodAdjustment Skid Adjustment Belt Adjustment CHAPTER Ill Lubricationand Maintenance CHAPTER IV Belt Replacement Auger Drive Belt Traction Drive Belt CHAPTER V Wheel Drive Gear Case Service and Friction Disk Replacement CHAPTER VI Auger Pulley and Auger Gear Case Servicing CHAPTER VII Drive Pulley Replacement

s o SNOW THROWER -. 1EPARATION FOR OPERATION ASSEMBLY Your Snow Thrower is factory assembled except for @ handle assembly,handle brackets, traction clutch rod, handle grips and shifter knob. 1. Attach handle bracketsto frame assembly with four 3/8-16 x 1/2 hex. cap screws and lock washers (Fig. 1). 2. Attach handle to handle brackets with four acorn head bolts, lock washers and hex. nuts (Fig. I). 3. Attach traction clutch rod to control lever assembly (Fig. 2) with cotter pin and flat washer. Refer to section on traction clutch rod adjustment for placing into shift arm holes. 4. Slip grips on handle bar. 5. Attach knob to traction shifter control (Fig. I]. Follow these instructions for proper installation of traction clutch rod after handle is attached to frame and rod attachedto shift lever. FIG. 1 FIG. 2 0 Pull and push unit.Wheels @) should turn easily. If they are, no further adjustment @ should be required. MODEL 55008 55020 Place Shift Lever In The Neutral (N) Position. Attach Lower End Of Control Rod lnto Center HoleOf Shift Arm And Secure With Spring Clip. Pull Shift Lever Back lnto The Re- verse (R) Position And Ahead lnto The Forward (F) Position To See If These PositionsAre Are Approximately 'The Same Distance From The Neutral (W) Position. If Reverse Is Further Away From Neutral Than Forward, Move Lower End Of Control Rod Down One Hole In Shift Arm. li Forward Is Further Away From Neutral Than Reverse, Move Lower End Of Control Rod Up One Hole In Shift Arm. Place Shift Lever In The Neutral [W) PositionAnd Start Engine.

INITIAL SERVICING IMPELLER CLUTCH LEVER 1. Fill the engine to the proper level with oil. Refer to engine manual for oil recommendations. 2. Fill gas tank with fresh, regular grade gas. 3. Although your Snow Thrower was lubricated at the factory it is well to do it again during initial servicing so as to become familiar with points requiring regular service. (See Lubrication and Maintenance.)A small hand grease gun and a pump type oil can are well suited for these lubrication operations. WE: All bolts and nuts should be checked and tight- ened during the first two hours of use. Periodic checks should be made thereafter. Make certain that the handle bar assembly is securely fastened to the frame at all times. If handle bar becomes loose the controls may get out of adjustment (SeeAdjustment and Servic- ing). COMROLS AND OPERATION OF SNOW THROWER TRACTION SHIRER LEVER This lever engages and disengagesdriveto the wheels as well as controls the direction of travel. The lever is located In the handle bar shroud. Lever must be in neutral [NJ before stafling engine or leaving the operating position. Neutral (N) is position I~cated when lever is in notch between F and R. To have unit travel forward, pull lever out of notch and fo the left, and ailow to move forward into the (F) slot. To have unit travel in reverse, pull lever all the way back and to the right (R position). You must hold the lever back for reverse. Releasing the handle will stop the unit (Returnsdrive to neutral). CAUTION: Before engaglng impeller be certain t h a L the impeller and auger are not frozen to the houris ottaemlre belt damage may occur. Check wlVh cu. gine shut off. BEFORE STARTING ENGINE 1. Place shifler lever in neutral (N). 2. Put impeller lever in "OUT" position. TO START ENGINE 4. Set throttle control in mid-position. 2. Choke engine. (Do not use choke if you are star?ing an engine that is warm.) 3. Start engine [See engine manual). OPERATING SWW THROWER 1. Set throttle control to fast position. 2. Engage impeller by pulling lever up. Move backward and allow it to go down to "IN" position. 3. Move shifter lever to desired position [Fonvard or reverse]. 1. Put shiner !ever in neutral [N] position. 2. Move impeller lever ts "OUT" position. I. To stop engine, push %?sotile control ail the way down LUBRICATION AND MAIMENANCE TRACTION CWTGH ROD Place shifl lever in the neutral (N) position and start engine. Keep hands and feet away from auger and chute, and be certain the auger clutch is in the "off" position.Try foward and reverse positionsto makesure the traction shifi lever is properly adjusted when your Snow Thrower is running; if not, adjust again according to the instructions given on Page 3. With shift lever in fsmaad position unit should move ahead; with shift lever in reverse position unit should back up; and with shift lever in neutral positionunit should show nosignsof moving in either direction. Stop englne before remsv- ing lower end of eontroi rsd from &if? arm or when making any omer ac8gushent. 6 4. Cheek oil - Remove dirt from around oil fill before removing. Check engine sli wi% Snow Thrower on level ground and engine stopped. Add oil when needed. 2. Make general visuaB inspection of Srbsw Thrower for loose or damaged parts. Cheek nuts and bolts per- iodlcaily to insure against looseness caused -, vibration or rough handling.Damaged sho be repaired or replaced. WE: Auger gear case and traction drive gear case each contain 1/2 pint of wheel bearing grease. It is not necessary to refill unless in teardown.

10 OPERATING HOURS Grease -Automotive Wheel Bearing Type. NOTE: Clean off grease fittings before attaching gun. A. Auger Bearing Support-Two fittings, one on each end of auger shaft (Fig. 3). Grease until the grease comes out of bearings. Wipe off excess grease. Grease with pressuretype gun. B. Snow Chute-Coat underside of ring (It is not necessary to remove chute]. C. Idlers - Fill groove and coat outside of shaft with grease. Remove idlers by taking snap ring and washer off idler arms and sliding the idler off the shaft. A. Oil all lever pivot points and linkages. B. Axle Bearings(Holein top of bearing). FIG. 3 ADJUSTMEHT AND SERVICING BELT ADJUSTMEHT Traction Drive and lrnpeller Drive. No adjustment required. These belts have a spring loaded idler which makes them self-adjusting. Periodically check idler to be sure it is operating freely and providing tension. If belts come off from pulleys - make sure that the pulleys are not loose and thatthe idler is not distorted.Idler should hit squarely on the belts. With drive engaged, belt fingers should be within 4/46" to 1/8" of belts. SKID ADJUSTMENT The skids mounted on each side of the auger housing, adjust the distance the scraper blade is raised above the ground surface. When removing snow from a gravel or uneven surface, it is advisable to keep the scraper blade as high above the surface as possible to prevent possible damage to the auger. On a black- - top or concrete surface, keep the scraper blade as :lose to the sudace as possible. To adjust skids. raise mow Thrower a few inches off the ground and loosen the nuts securing the skids to the auger housing. Move skids up or down to desired position and tighten nuts securely. Adjust both skids to the same height to keep the auger level. FIG. 4

CHAPTER B TROUBLE SHOOTING 4. Worn OF broken belts A. Check pulley alignment. B. Belt fingers not set within 4/46 -f/8 sf belt when the drlve bett Is engaged. C. Idlers loose or frozen up due to lack of lubrication. D. Substitute belts used. E. Loose pulleys. F. Lossa or taroken idler spring. G. Belt cover removed f r ~ m unit. H. Auger or impller jammed. 2. Augers won't turn A~ Auger shew plns broken. WE: Do nod usa substitute shear piws. These are special pins &at "will break when items other %an snow are? jammed into the augers. Substi- tute plns may be too herd and damage may result to %-ae augers or auger gear case. B. Worn or broken belt. C. Internal damage to auger gear case. D. Sheared roll pin -auger pulley - impeller assembly. 3. Unit doesn't move A. Worn or broken belt. 5. Check traction lever adjustment. C. Check friction disk. B. Check wheel drive gear case. E. Wheel piws broken or missing. F. idler spring off or broken. 4. Impeller idler arm front suppor68abs broken Oo~ae a.t the welds inside ef blower.(Referto Sewice Bulletin 135A Kit $9473) A. Caused by puSPing the longer cap screw 3/8-46 x 3 in the handle brackets instead of using :he 3/8-16 x 5/8 cap screws. Aflach lower end of control rod into center hole of $Riff arm and secure with spring clip (Fig. I]. Place shin lever in the neutral (N) position. Try pushing Snow Thrower forward and backward. Wheels should turn. Pull shift lever back into the reverse (R) position and put shift lever into the forward (F) position to see if these posi- tions are approximately the same distance from the neutral (N) position. If they are, no further adjustment should be required. If reverse is further away from neutral than forward, move lower end of control rod down one hole in shift arm. If forward is further away from neutral than reverse,move lower end of control rod up one hole in shift arm. Place shift lever in the neutral (Nj position and star3 engine. Keep hands and feet away from auger and chute, and be certain the auger clutch is in he "OW' position. T~P/ forward and revene pO%itir;Pns to make sure the traction shifi iever Is properly adjusted when your Swsw Thrower is mwning; If 14~9, adjust again a~~ording to 'he instruet!snsabovg. LVWi sbifi igevsb In faward posi- tian unlB should move ahecrad; with hlfi lever in revsne position unit should back up; and wim shift lever in neutral position unit should shmv nnc? signs sf rnm~ing 8n either direction. Stop englr%e befoss removing lower end of eontr~l rod from sh i W aim or when making any other adjustment.

SKID ADJUSTMENT 4 HP 18" Cut The skids (Fig. 2) mounted on each side of the auger using, adjust the distance the scraper blade is rais- Traction Clutch A above the ground surface. When removing snow Shifter Lever- rrsm a gravel or uneven surface, it is advisable to keep the scraper blade as high above the surface as possible to prevent possible damage to the auger. On a blacktop or concrete surface, keep the scraper blade as closets the surface as possible.To adjust skids, raise Snow Thrower a few inches off the ground and loosen the nuts securing the skids to the auger housing. Move skids up or down to desired position and tighten nuts securely. Adjust bslh skids k the same height to keep Deflecto the auger level. BELT ADSIISWBWEW TB~(G@OW Ddw8 and impeller Ddve. No adgustmen! required. These belts have a spring loaded idler which makes %hem self-adjusting.periodicadly check lases to be sure it Is operating freeiy and proviaing tension. I% belts come sfl from pulleys - ,make sure that the pus- leys are ws8 loose and thatme :dBerBs i?atdi~t~ded,?di@r shsuid hit squarely on the $sits 2Vih drive en gag^, belt fi~gers s!-@uk2 ". atitherin 4/16" to "$8" sf beits. f 10.2 GHAPTER III 5 HB 24" cut DischargeGuide Control LUBRICATION AND MAI WENANCE d >ractJon S~wd Control 1. Chsek OBI - Remove diri from around oil fill before removing. Check engine 019 wi% Snow Thrower on OeveI ground and engine stopped. Add oil when weeded. Refer $0 Engine Manual far oil ;eccsm- menaafions. 2. Make general visual inspection of Snow Thrower for loose or damaged parts. Check nuts and bolts per- lsdicallly ts insure against Bosseasess caus& by vibration or rough handling. Damaged parts shouid be repaired sr repicreed. 1. Grease - No. 2 Adomotive Wheel Bearing Type. - A. Collector Bearing -One ow each end of collec- Zsr shaff, Fig. 7. Remove once a season and pack with grease if unit does not have grease fi88ing. 4 ' Thrower Discharge Guide Skid 8. Discharge Guide - Coat underside of ring. [it is nsl necessaw to remove discharge guide.]

C. Wheel Assemblies -Remove wheels and coat axle shafts. MTE: Collector gear case and traction drive gear case each contain 1/2 pint of wheel bearing grease. It is not necessary to refill unless in teardown. 2. Oil - Engine Oil. (S.A.E. 5W-20 or S.A.E. 10W) A. QII all lever pivot points and linkages. B. Axle bearings. CHAPTER IV BELT REPWCEMEM The belts on this Snow Thrower are specifically de- signed and engineered to provide long service. If belt replacement is required, order by part number to be sure you have a belt that will provide the life and service required. DO NQT USE SUBST~PWE BELTS. impeller Drive Bett 4. Remove belt guard. 2. Tilt snowthroweronend [augerfacedown]. BE SURE GAS TANK HAS BEEN DRAINED TO AVOID EXCESSIVE SPILLING OF GAS. Remove boRom housing cover. 3. Remove impeller drive idler spring. 4. Remove belt guide, Fig. 5. 5. Remove impeller drive belt from engine pulley, Fig. 5. 6. Push belt down (off from bottom groove in impeller pulley) so that it rests on the collector housing. - 24" CUT elt Guide FIG. 4 BELT ledSBAbLATCQN DIAGRAM 5 H.P. - 24" CUT 7. Remove collector bearings from both ends of col- FIG. 5 lector shaft, Fig. 8. When reassembling, check Traction BeH bearings. If grease is needed, refer to the "Lubrica- tion And Maintenance"section. 1. Remove belt guard. 8. Engage thrower clutch. 2. Removetraction driver idler spring. 9. Pull out entire collector and impeller assembly. 3. Remove belt guide, Fig. 5. 40. Removeold belt and replace with new one. Check impeller bushing for wear and grease it applic- 4. Tilt snowthrower on end (auger facedown). BE SURE able to unit. GAS TANK HAS BEEN DRAINED TO AVOID EXCESSIVE SPILLING OF GAS. Remove bstiom housing cover. 11. Reverse the above procedureto reassemble. -- 5. Remove auger drive idler spring. , 6. Remove impellerdrive beltfromengine pulley,Fig. 5. WE: Be sure to have the belt resting in boRom of collector housing before sliding collector and impeller Push belt down (off from bottom groove in impeller assembly back in. pulley) so that it rests on the collector housing. 10

Gilson Snow Thrower service repair manual maintenance

You're Reading a Preview

Recently Viewed