Toro 1840 User manual

12-12
SECTION 12 SNOWBLOWERS
-PART B
MODELS 1840,1840A
TABLE OFCONTENTS PART B MODELS 1840,1840A
SEE PART
A FOR MODELS 2680, 2680A, 2650, 2650A, 2650B
CHAPTER
I TROUBLE SHOOTING 12-13
TRACTIONCLUTCH ROD ADJUSTMENT12-13
SKID ADJUSTMENT12-13
BELT ADJUSTMENT12-13
CHAPTER
I11 LUBRICATION AND MAINTENANCE12-14
AUGERDRIVEBELT.. 12-14
TRACTIONDRIVE BELT12-14
CHAPTER
I1 ADJUSTMENTS
CHAPTER IV BELT REPLACEMENT
CHAPTER V WHEEL DRIVE GEAR CASE SERVICE
CHAPTER VI AUGER PULLEY AND AUGER GEAR
AND FRICTION DISK REPLACEMENT 12-15
CASESERVICING 12-15
CHAPTER VI1 DRIVE PULLEY REPLACEMENT 12-15
SAFETYWARNING,
DISCONNECTSPARK
PLUG WIRE
BEFORESERVICINGORMAKING
ADJUSTMENTS.
SERVICEBULLETINREFERENCES

CHAPTER I
TROUBLE SHOOTING
1. Worn or broken belts
A. Checkpulleyalignment
B. Belt fingersnot set within 1/16 1/8 of belt
when the drive belt is engaged
C. Idlers loose or frozen updue tolack of
lubrication
D. Substitute belts used
E. Loose pulleys
F. Looseor broken idler spring
G. Beltcoverremovedfrom unit
H. Auger or impellerjammed
2. Augers won’t turn
A. Auger shear pins broken
Note: Do not use substitute shearpins. These
are special pins that will break when items
other than snow are jammed into the augers.
Substitute pins may betoo hardand dam-
age may result to the augers or auger gear
case
B. Worn or brokenbelt
C. Internal damage toauger gearcase
D. Sheared roll pin-auger pulley
A.Wornor broken belt
B. Check traction lever adjustment
C. Checkfrictiondisk
D. Checkwheel drive gear case
E. Wheelpins broken or missing
F. Idler spring off or broken
3. Unitdoesn’tmove
CHAPTER II
ADJUSTMENTS
CLUTCH ROD
Place shift lever in the neutral (N) position. Attach
lower end of control rod into center hole of shift arm
and secure with spring clip (Fig.
1). Try pushing
SnowThrower forward and backward.Wheels
should turn.Pull shift lever back into the reverse
(R) position and put shift lever into the forward (F)
positiontosee if thesepositions are approximately
the samedistancefrom theneutral (N) position. If
they are, no further adjustment should be required.
If reverse is further away from neutralthan for-
Fig. 1
ward, 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 intheneutral
(N) position and
start engine. Keep hands and feet awayfrom auger
and chute, and be certain the auger clutch is in the
“off”position. Try forward and reverse positionsto
make surethe traction shift lever is properly ad-
justed when your Snow Thrower is running;
if not,
adjust againaccordingto the instructionsabove.
With shift lever in forward position unit should
move ahead; with shift lever in reverse position
unit should back up; and with shift lever in neutral
position unit shouldshownosigns of moving in
either direction. Stop enginebeforeremovinglower
end of control rod from shift arm or when making
any other adjustment.
SKID ADJUSTMENT
The skids (Fig. 2), mountedoneachside of the
auger housing, adjust the distance the scraper blade
is raisedabove the ground surface.Whenremoving
snow from agravel or uneven surface, itis 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 closeto the surface as possible.To adjust
skids, raise Snow Thrower a few inches off the
ground and loosen the nutssecuring the skids to the
auger housing.Moveskids up
or downtodesired
position and tighten nuts securely. Adjust both skids
to the sameheightto keep the auger level.
BELT ADJUSTMENT
Traction Drive andImpeller Drive.
No adjustment
required. These belts have a spring loadedidler
which makes them self-adjusting. Periodically check
idler to
be sureit is operatingfreely and provid-
ingtension.
If belts come off from pulleys make sure that the-
pulleys are notloose andthat the idler is notdis-
torted. Idlershould hit squarely on the belts.
With drive engaged,beltfingersshouldbewithin
1/16” to 1/8” of belts.
SERVICEBULLETIN REFERENCES 12-13

CHAPTER 111
LUBRICATION AND MAINTENANCE
DAILY
1.
2.
10
1.
Checkoil.Remove dirt from around oil fill be-
fore removing. Check engine oil with Snow
Thrower on level ground and engine stopped.
Addoilwhenneeded.
Make general visual inspection of Snow Throw-
er forlooseordamaged
parts. Check nuts and
bolts periodically to insure against looseness
caused by vibration
or rough handling. Dam-
aged parts shouldbe repaired or replaced:
OPERATING HOURS
Grease Automotivewheel bearing type.
NOTE: Clean off grease fittings be-
fore 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 pressure type
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.
2. Oil-SAE 30
A.Oil all lever pivotpoints and linkages.
B.Axle bearings (hole in top of bearing).
NOTE: Auger gearcase and traction
drivegearcaseeach contain
1/2 pint
of wheel bearinggrease.
It is not
necessary to
refill unless in teardown.
CHAPTER IV
BELT REPLACEMENT
BELT REPLACEMENT
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 insure you have the right belt that will provide
the life and service required.
Do not use substitute
belts.
AUGER DRIVE BELT
1. Remove belt guard (Fig. 2).
2. Remove belt guide (Fig. 4).
3. Remove impeller idler spring (Fig. 4).
4. Remove'auger belt from engine pulley (Fig. 4).
5. Push belt down (off from bottomgroove in
auger pulley)
so that it rests on the auger hous-
ing.
6. Remove auger bearing from both ends of auger
shaft (Fig.
3).
7. Pull out entire auger and impeller assembly
(Fig.
3).
8. Removeold belt and replace with newone.
9. Reverse the above procedure toreassemble.
TRACTION DRIVE BELT
1. Follow steps 1 through 7 of auger drive belt re-
2. Remove traction drive idler spring (Fig. 4).
3. Removeold belt and replace with newone (Fig.
4. Reverse procedure to reassemble Snow Thrower.
NOTE:Be sureto have the new belt
resting in bottom auger housing before
slidingauger and impellerassembly
back in,
placement.
4).
Fig. 3
Fig. 4
12-14 SERVICEBULLETINREFERENCES

CHAPTER V
WHEELDRIVEGEARCASESERVICING AND FRICTION DISK REPLACEMENT
1. Disconnect spark plug lead.
2. Drain fuel from tank and tip Snow Thrower forward and rest handle on bench.
3. Removewheels.
4. Removebottomcover plate.
5. Remove bolts holding both side plates tounit.
6. Pull left-hand side plate loose so traction arm spring
7. Complete unit can now be removed for servicing.
8. Gear and Friction DiskReplacement:
A. Remove hex. lock nuts
on left-hand side of
NOTE
Locate and count spacers and washers for
proper replacement.
friction disk can be replaced.
can be released.
gear casecover.
9. Gear case can now be opened up for servicing and
REF. LET. ARETHE SAME IN OWNER'S MANUAL AS IN SERVICE MANUAL.
CHAPTER VI
AUGERPULLEY AND AUGERGEARCASESERVICING
1. Follow steps 1 through 6 of Chapter IV for removal
2. Remove augers from shaft.
3. Gear case can now be opened for servicing.
4. Be certain augers are replaced properly.
of auger gear caseassembly.
REF. LET. ARETHE SAME IN OWNER'S MANUAL AS IN SERVICE MANUAL.
CHAPTER VI1
DRIVEPULLEYSERVICING
1. Follow steps 1 through 3 of Auger Belt Replacement, Chapter IV.
2. Follow step 2 of Traction Belt Replacement, Chapter IV.
3. Loosen or remove engine.
4. Follow steps 1 through 7 of Chapter V for removal of
5. Remove bolts holding back plate assembly to main frame.
6. Remove bolts holding bearing support to main frame.
wheel drive gear case and axle.
NOTE
Locate and count spacers and washers for proper replacement.
7. Complete drive pulley assembly can now be removed for servicing.
EM
REF. LET. ARETHE SAME IN OWNER'S MANUAL AS IN SERVICE MANUAL.
SERVICEBULLETIN REFERENCES 12-15