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Check Gear Box Oil
Check the oil level in the gear box (A, Figure 5) and
if necessary, add AGMA 5EP, SAE 80W90 gear oil or
equivalent.
Inspect & Reversing Scraper Bar
1. Raise snowthrower to highest position.
2. Use safety block(s) to secure snowthrower:
a.
Place safety block under attachment.
b.
Lower attachment until it rests on block(s).
3. Inspect location where scraper bar (B) meets
snowthrower housing. If necessary proceed to
steps 4-7.
4. Remove the eight (8) nuts and bolts (C).
5. Remove scraper bar (B).
6. Reverse or replace scraper bar.
7. Replace the eight (8) nuts and bolts and tighten.
Shear Bolts
Refer to Figure 5 for the special grade 8 one grooved
shear bolt on the discharge fan (D) and the two (2)
special grade 5 two grooved shear bolts (E) on the
auger.
Check at frequent intervals for proper tightness to
be sure the snowblower is in safe working condition.
Torque must be at 9 lbs-ft (12 N-M).
Check for excessive wear. The shear bolt will break if
the auger or fan hits a solid object. If this happens:
1. Stop the snowthrower and tractor immediately.
2. Stop the engine, lock the parking brake, and
remove the key.
3. Remove the broken shear bolt.
4. Install a new shear bolt.
5. Locate and correct the cause of the shearing.
Note: After shear bolt breakage on one of the augers,
make sure to reposition the augers 180° opposite from
each other.
Skid Shoe Adjustment
Adjust the snowthrower so that the skid shoes run level
and according to the surface conditions so that stones
are not thrown with the snow.
Adjust both skid shoes to the same height to keep
the cutting edge level and adjust upwards for smooth
surfaces.
Loosen skid shoe bolts (A, Figure 6), adjust to the
necessary clearance measurement (B).
• Level paved surface: 1/16" to 1/8"
• Uneven or gravel surface: 1/2" to 5/8"
E
A
B
C
Figure 5. Scraper Bar & Shear Bolts
A. Gear Box
B. Scraper Bar
C. Scraper Bar Hardware
D. Shear Bolt (P/N 667786)
E. Shear Bolts (P/N 5657295)
B
Figure 6. Lubricate Auger & Discharge Chute
A. Skid Shoe Bolts
B. Clearance Measurement
Maintenance
D
E
A
ES
GB
9
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