pequeajim
Platinum Member
Replaced my Robin 25 HP Because I wanted to be one of the boys...
After a fair amount of reading on here about the 28 hp EFI engine and seeing the it was pretty much a painless swap out, I decided to replace my Robin 25 hp that came with my 425 with a new Robin fuel injected 28 hp engine. I was hoping for two things, 1. easier starting in cold weather and 2. a few more hp that would enable me to mow easier on the slopes in my south-central PA yard.
I spent a little time on the phone, (ok, more than a little...), with Kent and then called my local dealer Wes Stauffer Equipment LLC in Ephrata, PA to place the order. Wes is a great guy and I have been buying parts from hims for the past 5-6 years. Always gives me a great deal.
I ordered the version with the larger crankshaft to match the 25HP engine, labeled "AB Normal" in the 425, and it was... Robin makes two versions, the 1-7/16 crankshaft version is the one I ordered which is a direct match. This meant that the geared coupling could be reused from the old engine and Wes would cut the shaft to length and mount it for me. Since I don't have a portable metal Bandsaw, I took him up on it.
I also ordered the Robin muffler kit, heavier version for $179.00, some heavy duty fuel line and 1-SS flexible exhaust.
We pulled the existing "AB Normal" engine out and took it to Wes. A week later he had my new engine ready to go. My brother in law, nephew and I took the truck over there and picked up the engine.
After a fair amount of reading on here about the 28 hp EFI engine and seeing the it was pretty much a painless swap out, I decided to replace my Robin 25 hp that came with my 425 with a new Robin fuel injected 28 hp engine. I was hoping for two things, 1. easier starting in cold weather and 2. a few more hp that would enable me to mow easier on the slopes in my south-central PA yard.
I spent a little time on the phone, (ok, more than a little...), with Kent and then called my local dealer Wes Stauffer Equipment LLC in Ephrata, PA to place the order. Wes is a great guy and I have been buying parts from hims for the past 5-6 years. Always gives me a great deal.
I ordered the version with the larger crankshaft to match the 25HP engine, labeled "AB Normal" in the 425, and it was... Robin makes two versions, the 1-7/16 crankshaft version is the one I ordered which is a direct match. This meant that the geared coupling could be reused from the old engine and Wes would cut the shaft to length and mount it for me. Since I don't have a portable metal Bandsaw, I took him up on it.
I also ordered the Robin muffler kit, heavier version for $179.00, some heavy duty fuel line and 1-SS flexible exhaust.
We pulled the existing "AB Normal" engine out and took it to Wes. A week later he had my new engine ready to go. My brother in law, nephew and I took the truck over there and picked up the engine.
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