Does my mower engine have valves or not

[Lennie11b]

I have a 94 mtd with a 16.5 b&s twin 2 ic it is hard to start and I have looked around and can't find any valves to adjust so does anyone know if this engine has valves

 

[exotion]

Woo engines have valves... Either ohv or inside

 

[davbell22602]

The valves are under the cylinderhead. You have Lhead twin engine.

 

[Mike88se]

Yep... gotta have those valves I adjusted the valves on a 12.5hp Briggs IC from the same era. I guess they were what exotion called outside. Best I recall: 1. Find valves. 2. check clearance. 3. if not in spec remove and file stem end. 4. recheck clearance. 5. if not in spec repeat 3. repeat until clearance is in spec. I was told that perfection was not required. Some even disagree on what spec is for the intake valve.
Kinda crazy way to do things. The "keepers" were a minor PITA to reinstall.
Hopefully a more knowledgeable person than myself will come along and contribute. exotion prob knows more
There are helpful vids on youtube.. try donyboy

 

[Lennie11b]

The valves are under the cylinderhead. You have Lhead twin engine.

Kinda new to small engines how big of a job is this and whats the steps to do this it might not be the valves my engine will turn over slowly with the plugs in but with the plugs out it will turn over fast like its supposed too so valves is what im guessing

 

[davbell22602]

Does your oil smell like there's gas in it. Might be starter or battery issue?

 

[exotion]

Kinda new to small engines how big of a job is this and whats the steps to do this it might not be the valves my engine will turn over slowly with the plugs in but with the plugs out it will turn over fast like its supposed too so valves is what im guessing

Your kind is kinda difficult imo I like overhead personally if your inexperienced you might wanna consider hireing out

 

[Lennie11b]

I bought this mower to learn small engine repair im actuallu making it into a off road deal so I up to anything how do I start pull the engine or can it stay in any websites explaining this

 

[reynoldston]

I bought this mower to learn small engine repair im actuallu making it into a off road deal so I up to anything how do I start pull the engine or can it stay in any websites explaining this

Nothing wrong with learning small engine repair. To do so I take it you have a good set of tools. If you don't know the different between a 2 cycle engine (no Valves) and a 4 cycle engine (valves) I would say go to the library and get a book on small engines and repairs. A earlier post gave you a good description on what you have to do. To adjust valves on a L head engine it has to come apart. Which mike88se already told you how to do. The library book will give you a good description with pictures.

The best of luck with this.

 

[davbell22602]

Here's a link to Briggs Lhead twin engine shop manual.

http://dl.dropbox.com/u/12502267/B&S Service Manuals/02_271172TwinCylinderLHead.pdf