ADJUSTMENTS 10
en-30
10Adjustments
10.1 GENERAL PRECAUTIONS
________________________________________________________
A qualified technician must always do adjustments and maintenance. If the correct adjustments can not be made,
contact your Jacobsen Dealer.
Inspect the equipment according to the maintenance schedule and keep complete records.
a
Keep the equipment clean.
b
Keep all moving parts correctly adjusted and lubricated.
c
Replace worn or damaged parts before you operate the mower.
d
Keep all fluids at the correct level.
When you make the adjustments or repairs, do not wear jewelry or loose fitting clothing.
Refer to the illustrations in the Parts Manual for the removal and assembly of parts.
When you discard hazardous materials (engine oil, fuel), follow your local, state or federal-recommended procedures.
10.2 HEIGHT OF CUT (HOC) _____________________________________________________
The height of cut is adjusted by adding or removing 1/2 inch (1.2 cm)
spacers between the blade disk and the impeller.
1.
Stop the engine, close the fuel shut-off valve and disconnect the
spark plug wire.
2.
Tilt the mower on the left edge so the air filter and carburetor face
up and away from the ground to access the bottom of the deck
housing.
3.
Remove the engine shaft bolt, washer and blade disk.
4.
Refer to the height of cut chart and install the correct number of spacers between the blade disk and the impeller.
5.
Using the correct length engine shaft bolt for the height of cut, assemble the blade disk, washer and engine shaft
bolt. Tighten the shaft bolt to 38-40 ft. lb. (51-54 Nm) for the 20 inch (50.8 cm) HoverKing or 12-14 ft.lb. (16-19
Nm) for the 16 inch (40.6 cm) HoverKing.
6.
Store remaining engine shaft bolt lengths and spacers for future use.
WARNING
Before you clean, adjust or repair this equipment, stop the engine, close the fuel shut-off valve and disconnect the
spark plug wire.
Make sure the mower is parked on a solid and level surface. Only tilt the mower so the air cleaner and carburetor
are above the crankcase.
CAUTION
The blades have sharp edges. To prevent injury, use caution when
you service or hold the blade.
HOC
Spacers
Engine Shaft Bolt
20 inch (50.8 cm) HoverKing
Engine Shaft Bolt
16 inch (40.6 cm) HoverKing
3 inch (7.6 cm)
0
3/8-24 x 3-1/2 inch (8.9 cm)
1/4-28 x 2-3/4 inch (7 cm)
2-1/2 inch (6.4 cm)
1
3/8-24 x 3-1/2 inch (8.9 cm)
1/4-28 x 3-1/4 inch (8.3 cm)
2 inch (51 cm)
2
3/8-24 x 4-1/2 inch (11.4 cm)
1/4-28 x 3-3/4 inch (9.5 cm)
1-1/2 inch (3.8 cm)
3
3/8-24 x 4-1/2 inch (11.4 cm)
1/4-28 x 4-1/4 inch (10.8 cm)
1 inch (2.5 cm)
4
3/8-24 x 4-1/2 inch (11.4 cm)
1/4-28 x 4-3/4 inch (12.1 cm)
!
Spacer(s)
Blade Disk
Washer
Shaft Bolt
!
