Bolens 3AA サービスマニュアル

1.  Always observe safety rules when performing any 

maintenance.

2.  The warranty on this snow thrower does not cover 

items that have been subjected to operator abuse or 

negligence. To receive full value from the war-

ranty, operator must maintain the snow thrower as 
instructed in this manual.

3.  Periodically check all fasteners and hardware to 

make sure these are tight.

The shave plate and skid shoes on the bottom of the 

snow thrower are subject to wear. These should be 
checked periodically and replaced when necessary
1.  To replace, remove two carriage bolts and hex nuts 

securing each skid shoe to the auger housing.  See Fig. 9

2.  Reassemble new skid shoes with hardware just removed. 

Make sure the skid shoes are adjusted to be level.

3. 

To remove shave plate: Remove both skid shoes 
and hardware including carriage bolts, and hex 
nuts which attach shave plate to the snow thrower 
housing. For location of shave plate, see Figure 9.

4.  Reassemble new shave plate, making sure heads 

of the carriage bolts are to the inside of the housing. 
Reinstall skid shoes. Tighten securely.

The augers are secured to the spiral shaft with four 

shear pins and cotter pins. If you hit a foreign object or 

ice jam, the snow thrower is designed so that the pins 

may shear. Refer to Figure 9.
If the augers do not turn, check if the pins have sheared. 

Replace, if needed, with proper shear pins. Refer to 

item 42 on page 17 for part number.
IMPORTANT: NEVER replace the auger shear pins with 

standard pins or fasteners. Any damage to the auger 

gearbox or other components, as a result of doing so, 
will NOT be covered by your snow thrower’s warranty.

For a view of the lubrication points on the snow thrower, 
see Figure 10. 
1.  Lubricate pivot points on the auger control and drive 

control with a light engine oil once a season.

2.  Lubricate the auger idler bracket with a light engine oil 

once a season.

Listed below are general recommendations about 
maintaining your snow thrower engine. For further details, 
refer to the accompanying engine manual.
1.  Before operating snow thrower, check the oil level. 
2.  Change engine oil after first two hours of operation 

and every 25 hours thereafter. 

3.  Clean spark plug and reset the electrode gap to 

0.030” at least once a season or every 100 hours of 
operation; replace every 200 hours of operation.

Follow instructions below to check condition of drive belts 
every 50 hours of operation.
1.  Remove the plastic belt cover on the front of the engine 

by removing the self-tapping screw and pressing the 
plastic tabs to release the belt cover. See Figure 11

2.  Visually inspect for frayed, cracked, or excessively 

worn out belts. Replace, if necessary, following 
instructions on page 13.

NOTE: 

If auger continues to 

rotate with the control 

disengaged, shut off 

engine and re-adjust.