What's on your bench today?

[spudulike]

I was talking to Spud earlier today about 'leak down testing' on a 4mix engine. This type of testing has not so far been mentioned on this thread, but is a useful follow up to a compression test on a 4 stroke engine.

In fact, on many small engines found on lawnmowers etc, its not possible to do a compression test due to the built in decompressor.

A 'leak down test' applies a measured airflow to the engine at TDC (compression). By measuring the loss in pressure and flow through the engine, and listening to the position of the airloss, it is possible to identify problems such as blown head gaskets, worn rings, burnt valves etc.

This is the Briggs leakdown tester.

[ATTACH]106849[/ATTACH]

 

[ATTACH]106850[/ATTACH]

 

[ATTACH]106851[/ATTACH]

 

I think we confused most of the guys on here with vacuum and pressure testing - now you have really gone and done it:blushing:

 

Think we had better stay with compression testers.

 

Nice kit Mr Garden, a toy I don't have:thumbup:

[swinny]

How much is an 020t carb for future reference?

 

Cheers

[Rich2484]

Great another toy I need to buy. Think you mr gardenkit. It's all shiny and new. I must have one now.

 

So how much and where did you get it from?

[GardenKit]

Great another toy I need to buy. Think you mr gardenkit. It's all shiny and new. I must have one now.

 

So how much and where did you get it from?

Tbh Richard, I cant remember what it cost, Ive had it a few yearss, I think about £80. I will check tomorrow and let you know. Its part of the Briggs service dealer tool requirement.

[Rich2484]

Tbh Richard, I cant remember what it cost, Ive had it a few yearss, I think about £80. I will check tomorrow and let you know. Its part of the Briggs service dealer tool requirement.

 

Thank you.

 

Oh I do have one small question. It's on the 200t. The av mount on front bottom of the handle has stripped the thread. I havnt had a close look at it yet but need to know if I can re tap a thread in it and use another bolt?? Is this worth it or just get another mount??

[GardenKit]

Thank you.

 

Oh I do have one small question. It's on the 200t. The av mount on front bottom of the handle has stripped the thread. I havnt had a close look at it yet but need to know if I can re tap a thread in it and use another bolt?? Is this worth it or just get another mount??

Just get another mount Richard, they are not expensive.

[Rich2484]

Ok gardenkit. You know what's coming next then.....

 

Will have a nose and see if there's anything else I may need while I'm at it.

[WorcsWuss]

Thank you.

 

Oh I do have one small question. It's on the 200t. The av mount on front bottom of the handle has stripped the thread. I havnt had a close look at it yet but need to know if I can re tap a thread in it and use another bolt?? Is this worth it or just get another mount??

 

Assuming you mean the rubber [annular] buffer which screws to the crankcase and the lower end of the wrap handle screws to it, the part number is 1116 790 9600 and the list price is the princely sum of £4.05p!

[spudulike]

Yes but it screws in to the handle so if the thread has gone....:confused1:replace the buffer????? That won't work!!!

[GardenKit]

No Spud, dont post till you are awake:biggrin:

it screws into the saw, and a bolt goes through the handle into the buffer..., so it might work.