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I have a 1987 model Snapper rear engine rider and I have a replacement engine ordered for it. I have been told that there is a keyway at the end of the shaft coming out of the [vertical] engine. If I remove the mounting bolts, will the engine slip off of the top of the pulleys, or how much work will be involved? I am somewhat of an auto tech, but when it comes to small engine replacement, I'm starting from scratch. It's an 11 hp vertical Briggs engine. Any advice is appreciated!! Thanks in advance!!

Swapping engines on a scale of 1-10 is probably around a 5 - not hard, but theres some stuff involved. The rear engined tractor is a bit tougher, with all the mechanicals located at the back, but it can be done with normal tools.
First off id reccomend taking photos/drawings of linkages/belt paths/ect before taking anything off, to help with reassembly.
The wires from the starter motor, and charging system need to be unhooked, the fuel lines ( gas should be drained out) and throttle/choke cables need to be unhooked, since the old motor is no good, id drain the oil out of it ( ive tipped one over- its a mess!) to be on the safe side. Pretty much the only thing left is removing the motor mount bolts, it might be easier to either jack it up and block it or since its a Snapper - it could be stood on end and easily unbolted. The motor and drive plate/pulley should come out thru the chassis.
Once the motor is off the tractor, you'll have to remove the pulley/plate to put on new motor, theres a small allenhead screw holding it on the motor- loosen that , it might be a bit tough to pull off, but it will.
When putting on the new motor, use a light coating of never seize on the engine crank end, so if it needs removing later- itll come off easier. Remount the motor back on the chassis, and reattach all the linkages/hoses. Id suggest a good high quality SAE 30 motor oil and using a new fuel filter on the fuel line. The only thing that might be a problem is the charging system wire - you might have to splice it, depending on the wires from the motor and chassis. After the first mowing- to be sure , just recheck all the engine mount bolts- check it over.

2007-08-27 22:47:44 by DP

After removing a lawn mower#39;s fuel tank to access the carburetor, the carburetor can be cleaned with a carburetor cleaner or a simple brush ...

I am the proud inheritor of a Yard-Man "Easy Rider" rear-engine riding lawn mower powered by a 12.57 cu. in. 5HP Briggs and Stratton vertical crankshaft engine. The following are the identification codes off the engine tag:

MODEL: 130902
TYPE: 0355 02
CODE: 76102507

I cannot seem to find a replacement engine out there, as the machine was probably built around 1980 or so (I'm guessing). I'd have to imagine that there's a more up-to-date engine that I can drop into this beast.

Is it workable to replace such an old engine with something with a few more "horses?" I'm really having trouble getting any info on "OEM"-type replacements.

Thanks!

Jayson

As stated, the shaft size is the most important thing. The mounting pattern will be the same on a similar sized engine. The engine you have was made in 1976, they haven't changed much over the years. I would think that you could go up towards 10 hp before the shaft size changes.

2008-05-11 17:02:08 by Chainsaw On Idle

Price: $299.95 $255.99

3-in-1 cutting system--mulch, rear bag, and side discharge
12-inch rear wheels increase maneuverability over a variety of terrain
7021P is compliant for the state of California

I am trying to get a replacement engine and want to know which engines will be a direct bolt replacement for a Lawn Chief 540 riding mower.

Go to Briggs & Stratton.com and ask them what they recommend. There are so many models of B&S engines, it is best to ask the experts at B&S.

2007-05-09 22:01:55 by pyratemate

It is a Craftsman, 625 Gold Series Briggs & Stratton Engine. Thanks!

Yes start on Ebay and Craigslist. Place an ad on Craigslist looking for an engine. Check you local paper too

2009-06-15 09:48:10 by Shark with a Fricken Laserbeam

If 1890 stands for the year then I would say your kids, if it is a model # I havent heard of then just go to any farm supply store and buy a new engine . The engine is universal so get get either a verticl or horazontal shaft in about the same hp. and should bolt right up.

2006-07-02 12:31:39 by Dave T