Robbin 22hp Engine

[BobRip]

Kevin. I have the same problems on my 422 year 2000. I keep it in the heated garage (always above 50) and it works fine. I think it is simply that the starter must turn the engine and 4 hydraulic pumps with cold oil in them. It is unusual to have an engine tied to that kind of load when starting. Put multiple magnetic heaters on the engine, oil reservoirs and pumps. I have not tried this (because of the heated garage), but it has got to help.

 

[Rod in Forfar]

Not all Robins are hard to start in the cold. My last golf cart had a 9hp Robin twin in it. When I first got it, it would start, run about 100 feet, and then remain stalled until a thaw. A guy in Minneapolis told me the solution: twist the crankcase drain tube so that there is no trap for moisture. From then the EZ-Go worked well all winter, starting in sub-zero temperatures and running all over the Rideau Lakes without difficulty.

My 2004 Polaris Ranger TM has an 18 hp Robin engine. It gets 0W40 synthetic engine oil and one grade of plug hotter than the original. I have had a few starting issues with it, but it's usually pretty good in very cold weather. It's never let me down while ice fishing. That leads me to conclude there must be a bad connection somewhere I can't find, because the failure of the solenoid to activate the starter seems to be related to heat.

With 500 hours on the Robin engine, I have found I like the thing's good natured rhythm and its durability in a wide variety of applications including 8 parades in the last year and 40 hours of spraying.

 

[washita]

after reading all the posts, here is my 2 cents: 2007 425-25hp robin, the motor is a love/hate relationship. the motor would not start below 40 degrees, then I reconfigured the exhaust system, now it starts on first attempt at 20 degrees, any temperature below 20 degrees requires a second battery to help start it (correct cranking speed) personally I feel a relief valve in the hydraulics would help cold weather starting. the value per dollar spent, this tractor is a good investment. I wish it had electric start like my snowblower.

 

[BobRip]

Not all Robins are hard to start in the cold. .

It's not the engine, it's the application. PT should have found a way to disconnect the pumps from the engine during start, or some other solution for hard cold start.