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2. Remove drain plug (Fig. 53) from side of reservoir and
let hydraulic fluid flow into drain pan.
3. Note orientation of hydraulic hose and 90_ fitting
connected to strainer on side of reservoir. Remove
hydraulic hose and 90 degree fitting.
4. Remove strainer and clean by back flushing with a
clean degreaser. Allow to air dry before reinstalling.
Figure 54
1. Hydraulic strainer
5. Reinstall strainer.
6. Reinstall hydraulic hose and 90 degree fitting to
strainer in same orientation.
7. Reinstall and tighten drain plug.
8. Fill reservoir with approximately 7.5 qt. of Dexron IIl
ATF. Refer to Checking Hydraulic Fluid.
Replacing Spark Plugs
Replace spark plugs after every 400 operating hours to
assure proper engine performance and reduce exhaust
emission level.
Correct spark plug to use is a Champion RC 14YC or
NGK BPR 4ES.
Recommended air gap is .032".
Note: The spark plug usually lasts a long time; however,
the plug should be removed and checked whenever the
engine malfunctions.
1. Clean area around spark plugs so foreign matter cannot
fall into cylinder when spark plug is removed.
2. Pull spark plug wires off spark plugs and remove plugs
from cylinder head.
3. Check condition of side electrode, center electrode, and
center electrode insulator to assure there is no damage.
Important
malfunctioning spark plug must be replaced. Do not
sand blast, scrape, or clean electrodes by using a wire
brush because grit may eventually release from the plug
and fall into the cylinder. The result is usually a
damaged engine.
1
4. Set air gap between center and side of electrodes at
.040". Install correctly gapped spark plug and tighten
plug to 15–20 ft–lb. If torque wrench is not used,
tighten plug firmly.
5. Install spark plug wires.
Adjusting Brake Pedal
Check adjustment every 200 hours.
1. Loosen jam nut on link rod ball joint.
2. Rotate rod until gap between brake pedal and up stop is
.020–.080".
3. Tighten jam nut after adjustment has been attained.
1. Link rod ball joint
51
A cracked, fouled, dirty or otherwise
Figure 55
1
Figure 56
.032"
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