HONDA SB 2040 - Manual (Page 37)

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Maintenance & Adjustments SB2040 Snowblower
Other Maintenance Items
Shear bolt Replacement
The auger and discharge fan both have special shear bolts that are designed to break if either the auger
or fan are put under an excessive load. In the event a shear bolt does break, replace it with the bolt
specified here:
Fan, 5 x 40 mm with 1/2" shoulder, SAE Grade 8, Auger, 5 x 45 mm with 1/2" shoulder, SAE Grade 8.
See Blower Head in the parts listing for the locations of the shear bolts.
Belt Replacement
While it is not necessary, removing the snowblower from the lawn tractor makes this job much easier.
See page 30 for the snowblower removal procedure.
Remove the Old Belt
1.
2.
3.
4.
5.
6.
7.
If the snowblower remains on the lawn tractor, remove the silver, 10 mm flange bolt on the right side
of the lawn tractor frame that holds the snowblower drive belt guard. Remove the snowblower drive
belt from the engine pulley.
3/4" HEX BOLT
Remove the two bolts, lock washers and flat washers from the HOLD-DOWN
right rear discharge chute retaining plate. Remove the retaining
plate and the chain cover hold-down bracket.
Loosen the center bolt on the idler pulley (mounted to the blower
head) enough to move the belt guard out of the way, then
remove the old belt from the pulley.
Remove three 5/16 x 3/4" hex bolts holding the idler pulley
bracket and side plate.
Remove the four 5/16 x 3/4" carriage bolts that support the pulley
shaft bearings.
Remove the pulley shaft from the blower head to remove the old
belt.
Loosen (don't remove) the center bolts from the PTO clutch pulley and return pulley on the subframe.
Remove the old belt from both pulleys.
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