Valve, Ex. (c8e) 14721-ZL8-000

1. Prep engine for work. (drain oil, remove trim, remove from mow deck, etc)
2. Remove valve cover
3. Open crankcase
4. Remove flywheel with puller (try to mark locations on timing belt)
5. Remove crankshaft and piston (lose markings on timing belt)
6. Remove valve rockers and Springs then valves
7 ... Read more . Order new parts and wait for them to come
8. Install new valves and Springs and rockers (using online diagrams for exact part locations)
9. Install new rings on piston.
10. Install piston using recently purchased ring compressor
11. Install crankshaft
12. Refer to Internet for timing (quite simple)
13. Reinstall flywheel
14. Put rest if motor back together as best I can.
15. Try to figure why choke isn\'t working like should, no luck
16. Put in oil and gasoline and celebrate when it fires up and runs.

Disassembled engine by splitting case. Removed rod cap, removed crankshaft and removed piston and rod. Removed and replaced bent exhaust valve. Replaced cam gear and belt and reassembled engine.

1. Took off broken blades, blade holder and drive belt pulley. This required a two jaw puller due to bend in shaft.
2. Open up crankcase. Many steps involved. Followed youtube videos. Detailed videos exist.
3. Take out piston. Found lots of black soot on piston, crankcase and valve seats. Apparently due to mistiming from ... Read more running engine with bent crankshaft since this is a pretty new engine always running smooth before accident.
4. Use carburetor cleaner and lots of work to clean piston and case. Put in new valves and use grinding compound to clean valve seats and \"break in\" valves.
5. Install new crankshaft (also from ereplacement) and all new parts related to timing. The old ones looked fine but did not want to have to open up again in case there was some damage not visible.
6. Assemble everything. Again lots of steps. Take pictures when disassembling, label parts and use youtube videos. A mechanic friend lent me a puller and a torque wrench.
7. New blade holder and blades.
8. Pull starter cord. Starts right off. Runs very smooth. Cuts very well. Success but it is a major project for amateurs. I am retired thus have the time and love this Honda lawnmower. Kind of expensive because of all the new parts but still cheaper than a new Honda and I have only had it a couple of years. Now it\'s practically new.

replaced valves and adjusted rockers

Opened case
Lapped new valves
Replaced timing belt
Sealed case

Complete disassembled case. Removed broken parts. Complete inspection of internal parts. Did crank run out. Reassembled and torque all parts. Did not replace pto seal and should have. When I started the engine seal blew and oil drained everywhere. Need to replace seals and will be good after that.