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Adjusting the Drive Chain
Tension
Check the drive chain tension after every 25 operating
hours or once a year, whichever occurs first. Adjust as
necessary to maintain proper tension.
1. Disengage the PTO and set the parking brake.
2. Stop the engine, remove the key, and wait for all
moving parts to stop before leaving the operating
position.
3. Remove the cover from the snowthrower (Fig. 54).
1
2
Figure 54
1. Cover
4. Loosen the nut that secures the idler sprocket. (Fig. 55).
5. Slide the idler sprocket in the adjustment slot until the
chain is snug, but not tight.
6. Torque the nut securing the sprocket to 67 to 83 ft-lb
(90.8 to 112.5 N m).
Important
Do not overtighten the chain or excessive
wear will occur.
3
2
1
Figure 55
1. Drive chain
2. Idler sprocket
m–7071
2. Bolts
2
m–7070
3. Adjustment slot
4. Check deflection here
25
Storage
1. Before long-term storage, wash the machine with mild
detergent and water to remove dirt and grime from the
entire machine.
2. Check the condition of the scraper blade; refer to
Replacing the Scraper Blade, page 24.
3. Check the condition of the drive belt and chain.
4. Grease and oil the snowthrower; refer to Greasing and
Lubrication, page 18.
5. Check and tighten all bolts, nuts, and screws. Repair or
replace any part that is damaged or defective.
6. Paint all scratched or bare metal surfaces. Paint is
available from your Authorized Service Dealer.
7. Coat the inside auger housing and discharge chute with
automotive wax to prevent rust and reduce the sticking
of snow to these surfaces.
8. Store the machine in a clean, dry garage or storage area.
Cover the machine to protect it and keep it clean.
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