DUROMAX XP18HP, User Manual

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Cylinder head bolt
29.50 ± 2.21 ft. lb (40 ± 3 N·m)
Flywheel bolt 70 ± 5.9 ft. lb (95 ± 8 N.m)
Crankcase bolt 18 ft. lb. (24 NM)
Tie-rod bolt 9 ft. lb. (12 NM)
Intake Open (Timing) BTDC 10°
Intake Closed (Timing) ABCD 20°
Exhaust Open (Timing) BBDC 30°
Exhaust Closed (Timing) ATDC 10°
Torque Value
Timing Distribution
Spark Plug Clearance .027-.031 in. (0.7-0.8 mm)
Spark Plug Type F6RTC (Torch), F6TC (Torch), BPR6ES (NGK), RN9YC
(Champion), WR7DC (Bosch), W20EPR-U (Denso)
Valve Clearance (Cold) Intake: .006 in ± .001 in. (0.15mm ± 0.02mm)
Exhaust: .008 in ± .001 in. (0.20mm ± 0.02mm)
Carburetor Idling 1800 ± 300 rpm
Adjustment Specification
SPECIFICATIONS (CONTINUED)
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Adjustment, Torque, and Timing Specifications