Beginner FriendlyDemo — verification required
Replace Spark Plug
Remove, inspect, and install a new spark plug on the Hunter 350. Spark plug specification and tightening torque must be verified from the official manual before installation.
~45 min · 17 steps · 0% complete
Demo — verification required
Demonstration content — verification required.
Safety warnings — read before starting
- Never work on a hot engine — wait until cylinder head is cool to the touch
- Do not use an unverified spark plug type or heat range
- Do not guess tightening torque — use verified specification only
- Prevent debris from entering the plug hole — clean area before removal
- Do not yank the plug cap by the wire — pull the cap body straight off
- Stop if threads feel cross-threaded during installation
Step 1 of 17
Confirm engine is cool
Wait for a cold engine
- Hot engine hazard
Step checklist