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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 | 12-15 ft-lb | 144-180 in-lb | Tighten in crisscross pattern |
| Connecting Rod Bolts | 8-10 ft-lb | 96-120 in-lb | Critical - do not over-tighten |
| Flywheel Nut | 50-55 ft-lb | 600-660 in-lb | Use thread locker |
| Spark Plug | 10-12 ft-lb | 120-144 in-lb | Hand tight + 1/4 turn |
| Oil Drain Plug | 8-10 ft-lb | 96-120 in-lb | Replace crush washer |
| Carburetor Mounting Bolts | 5-7 ft-lb | 60-84 in-lb | Even pressure |
| Exhaust Mounting Bolts | 8-10 ft-lb | 96-120 in-lb | Check after first run |
| Air Filter Cover Screws | 3-5 ft-lb | 36-60 in-lb | Snug only |
| Valve Cover Bolts | 5-7 ft-lb | 60-84 in-lb | Even pattern |
| Side Cover Bolts | 8-10 ft-lb | 96-120 in-lb | Sealed engine - do not remove |
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 | 12-15 ft-lb | 144-180 in-lb | Tighten in crisscross pattern |
| Connecting Rod Bolts | 8-10 ft-lb | 96-120 in-lb | Critical - do not over-tighten |
| Flywheel Nut | 50-55 ft-lb | 600-660 in-lb | Use thread locker |
| Spark Plug | 10-12 ft-lb | 120-144 in-lb | Hand tight + 1/4 turn |
| Oil Drain Plug | 8-10 ft-lb | 96-120 in-lb | Replace crush washer |
| Carburetor Mounting Bolts | 5-7 ft-lb | 60-84 in-lb | Even pressure |
| Exhaust Mounting Bolts | 8-10 ft-lb | 96-120 in-lb | Check after first run |
| Air Filter Cover Screws | 3-5 ft-lb | 36-60 in-lb | Snug only |
| Valve Cover Bolts | 5-7 ft-lb | 60-84 in-lb | Even pattern |
| Side Cover Bolts | 8-10 ft-lb | 96-120 in-lb | Sealed engine - do not remove |