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Complete fastener torque values for all engine components. Use a calibrated torque wrench for all installations.
Reference only; the manufacturer's current manual is authoritative when in doubt.
Use a wrench that covers the range needed (e.g. 5–80 ft-lb for most small engines). For break-in procedure, maintenance intervals, and tightening sequences, see the full manual on the engine page.
Scroll horizontally to see all columns
| Component | Torque (ft-lb) | Torque (in-lb) | Installation Notes |
|---|---|---|---|
| Cylinder Head Bolts | 16-20 ft-lb | 192-240 in-lb | Tighten in crisscross pattern |
| Connecting Rod Bolts | 12-14 ft-lb | 144-168 in-lb | Critical - do not over-tighten |
| Flywheel Nut | 65-70 ft-lb | 780-840 in-lb | Use thread locker |
| Spark Plug | 13-15 ft-lb | 156-180 in-lb | Hand tight + 1/4 turn |
| Oil Drain Plug | 12-14 ft-lb | 144-168 in-lb | Replace crush washer |
| Carburetor Mounting Bolts | 7-9 ft-lb | 84-108 in-lb | Even pressure |
| Exhaust Mounting Bolts | 12-14 ft-lb | 144-168 in-lb | Check after first run |
| Air Filter Cover Screws | 4-6 ft-lb | 48-72 in-lb | Snug only |
| Valve Cover Bolts | 7-9 ft-lb | 84-108 in-lb | Even pattern |
Complete fastener torque values for all engine components. Use a calibrated torque wrench for all installations.
Reference only; the manufacturer's current manual is authoritative when in doubt.
Use a wrench that covers the range needed (e.g. 5–80 ft-lb for most small engines). For break-in procedure, maintenance intervals, and tightening sequences, see the full manual on the engine page.
Scroll horizontally to see all columns
| Component | Torque (ft-lb) | Torque (in-lb) | Installation Notes |
|---|---|---|---|
| Cylinder Head Bolts | 16-20 ft-lb | 192-240 in-lb | Tighten in crisscross pattern |
| Connecting Rod Bolts | 12-14 ft-lb | 144-168 in-lb | Critical - do not over-tighten |
| Flywheel Nut | 65-70 ft-lb | 780-840 in-lb | Use thread locker |
| Spark Plug | 13-15 ft-lb | 156-180 in-lb | Hand tight + 1/4 turn |
| Oil Drain Plug | 12-14 ft-lb | 144-168 in-lb | Replace crush washer |
| Carburetor Mounting Bolts | 7-9 ft-lb | 84-108 in-lb | Even pressure |
| Exhaust Mounting Bolts | 12-14 ft-lb | 144-168 in-lb | Check after first run |
| Air Filter Cover Screws | 4-6 ft-lb | 48-72 in-lb | Snug only |
| Valve Cover Bolts | 7-9 ft-lb | 84-108 in-lb | Even pattern |