Recent content by Dave1234

I would try the parts stores for something generic and metric that would fit a 1978 Dodge Colt. Failing that, I would consider buying a pipe tap and a short hopefully brass nipple and re-tap the hole to an American thread and just use a pipe nipple. Or maybe McMaster Carr has metric pipe nipples.

The water pump I replaced had the impeller facing the opposite way, as did the replacement. I didn't look at the engine for how the coolant came in and went out since both were identical. A 2nd water pump of a different brand that was otherwise identical looked like these. So no idea if it...

I have a Dodge Colt manual from 1984, which only lists the silent shaft engine, and a 1978 Arrow & Colt manual which has 4g32 engine details both with and without silent shafts but with a timing belt (not chain) and RWD, which is the closest I know of to what Bobcat used.. There were many...

Your description "scraping badly when being pulled out of the cylinder" suggests to me grit entering from through a failed wiper seal on the rod, more than from within the hyd system, but the scratches on the piston say a lot of grit got past the piston and thence secondarily throughout the hyd...

Can you tell me the brand of your brush cutter, and if you had been happy with its performance prior to this problem? Can you describe what it would readily cut? Thank you very much.I have a 11 gpm 742B and am wanting a brush cutter, but the ones I see take higher flow.

Yes, a good suggestion but scary in that the zinc is thin and brittle. Going to have to give that some thought anyway.

Bobcat's placement of the overflow tank below the radiator means that sucking fluid back in as the engine cools is hard. Any air leaking anywhere else will be easier to suck in than the heavier water/antifreeze. And if expelling coolant from such leaks is easier than overcoming the radiator...

I'm pretty sure mine is OEM. Also 2 piece axles. The end that connects to the float is like your original one. I didn't have any shims in mine. It seemed to be running rich, so I bent the float tab a little, eyeballing the float to sit more or less level when held upside down and in place...

One thought on swapping carbs--Bobcat went to a lot of trouble to de-tune this engine--definitely low compression pistons (~7.5:1 vs 9:1), blocked carb secondary when a straight off the shelf 2 bbl version would probably have been cheaper, and the less than optimal vacuum advance. And the...

After a lot of picture research for various Dodge colt water pumps, I bought a water pump for a 1978 dodge Colt--an Aisin WPM 006. It was an exact replacement for the one I took off my 742B with the 4G32 engine, and which appeared to be the OEM water pump. For research, I also ordered a 2nd one...

My carb lacks the glass window to verify correct float/fuel height, and I could not find specs for setting the float with shims as you show. Do you have float height setting details you could share? thank you. This is a really great asset for all of us, whether we have to tackle it all at...

Bummer. Thank you for the follow-up. And good to know. I assume you found the bypass jammed by rust or debris preventing movement, or the opening clogged. Makes me wonder if periodically exercising the bypass (by pushing something to its stops and holding it there) might be a good idea...

By now you've no doubt found the problem--can you let us know? It sounds like a problem with the pressure relief valve.

Can you give us an update on what you found and what it took to fix it? All of us with similar machines really appreciate hearing the details of a fix we might need to do in the future.

On my 742B I found that if I got the engine rotated just right, I could see at least one zerk with them positioned on the left side of the machine (that's the left when sitting in the seat, but right when laying on your stomach facing the rear/ engine) at roughly 2 o'clock position when looking...