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Need 20 hp Briggs V-twin repair manual

5122 Views 8 Replies 5 Participants Last post by  kcp877, 
O
I have one dead cylinder on my 20 hp Briggs V-twin engine. No compression on one cylinder. It starts and runs but lacks power. Does not make any noise. I pulled the plugs to check for compression and one cylinder has 150 lbs and the other one has zero. I inserted a wooden dowel into the bad cylinder and the piston does not move when I turn the crank. I figure the cap that holds the rod came off and is in the bottom of the pan. What do you guys think? I need that repair manual so if anyone can help me find one online I would be grateful. Thanks!
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W
Bad news is that some type numbers of B&S Intek twins only offer new connecting rods in sets AND only with the crankshaft as well. The site I have been recommending for manuals has quit handling them. I would try B&S Home.

Walt Conner
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Wizard99
put the cap back on. (probably not going to be that easy) suprised on a vanguard
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W
". I figure the cap that holds the rod came off and is in the bottom of the pan. What do you guys think?"

I think that engine would have been doing some serious knocking before a rod cap would "just come off", break more likely. Only one way to tell, you have nothing to lose.

Walt Conner
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W
". I figure the cap that holds the rod came off and is in the bottom of the pan. What do you guys think?"

I think that engine would have been doing some serious knocking before a rod cap would "just come off", break more likely. Only one way to tell, you have nothing to lose.

Well you still didn't post the model numbers but I see it is a Vanguard as opposed to an Intek which is good.

If you have a digital camera, take lots of pictures.

Walt Conner
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O
I'll try to get those model numbers posted tomorrow along with some pics. Although I'm really not sure how to post pictures into my replies. Can anyone give me a hint on posting pictures?
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O
The engine is a Briggs Vanguard 20 hp V-twin. The numbers are as follows:
Model #351447
Type # 1 180-A1
4952
Code #95082411
I hope that information helps out in locating a repair manual. I'll get the pics posted as soon as I find out how to post them.
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J
i have had GREAT luck with my identical motor. i am not sure, i am sure you might find one on EBAY
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K
I had the same engine, rod broke off right at the rod cap, ran fine, just on one cylinder, no noise etc. I could be wrong, but is there any possibility that two bolts could back out enough to fall out and have the rod cap fall off as well without anything else breaking? I priced out parts, wasn't worth repairing and the crank was scratched up good, new rod would have self destructed. price a replacement engine. I'm sure you can find a good used one for $100-150 then put the rest of your parts from your broken one on ebay. carb, heads etc..
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