FR691V Kawasaki Engine vs. other Kawasaki Engines

Zeroturner · Aug 10, 2014

How well does the FR691V Kawasaki 23 HP engine compare with say the FX? Or, any of the other Kawasaki 23 Hp engines.

It's my understanding that, other the the air filtration systems being different - they're basically the same engine.

Or, are they...?

Do the FR series engines start with lower overall quality or just are as good as any other Kawasaki 23 hp?

Anyone know the various differences?

Thanks!

Nwatson99 · Aug 10, 2014

When I went on the big research several years ago reading on air cooled Kawasaki engines yes the air filtering, engine covers, and carburetor was the three things that stood out. The FR was always classified as a heavy duty residential engine and to my knowledge Kawasaki only makes two series engines "rated" better than the FR, which are the FS and FX.

Zeroturner · Aug 10, 2014

Nwatson99,

Thanks for the response!

I would like to know what the differences are specifically between the beyond the various series, i.e. filteration, carburetoration, etc.

Or, as I think, maybe except for the above, it's (the FR) basically the same engine?

Zeroturner · Aug 10, 2014

I neglected to mention, I saw an ad for a "commercial grade" mower equipped with a FR691V engine, which I thought kind of odd, as it's on my residential grade MX5060.

Nwatson99 · Aug 10, 2014

Zeroturner said:
I neglected to mention, I saw an ad for a "commercial grade" mower equipped with a FR691V engine, which I thought kind of odd, as it's on my residential grade MX5060.

Funny you said that, there are many companies claiming to have a commercial mower that are not.

Zeroturner · Aug 11, 2014

I've researched and can't find if the FX is basically the same engine as the FR, except it's provided with a better air filtration system and perhaps a better carb system.

I've looked and looked and I've turned up exactly zero about any other differences.

Anyone here know what the other differences might be?

Thanks!

Nwatson99 · Aug 14, 2014

FX691V

Features:
Overhead v-valve
90° V-twin
High performance pressurized lubrication
Electronic spark ignition
Automatic compression release
Rotating grass screen
Dual stage canister air filter
Cast-iron cylinder liners
Metal engine cover
Heavy-duty shift-type starter
Twin barrel, internally vented carburetor with fuel shut-off solenoid

FR691V

Features:
Overhead V-valve
90° V-twin
High performance pressurized lubrication
Electronic spark ignition
Automatic compression release
Internally vented carburetor with fuel shut-off solenoid
Rotating grass screen

Nwatson99 · Aug 14, 2014

FX691V
Specifications:
Displacement: 726cm3 (44.3cu. in.)
Number of Cylinders: 2
Bore x Stroke: 3.1 x 3.0 in. (78 x 76mm)
Compression Ratio: 8.2:1
Oil capacity: 2.2U.S. qt (2.1liters)
Maximum Power: 22.0hp (16.4kW) at 3,600rpm
Maximum Torque: 39.4ft lbs (53.4Nｷm) at 2,200RPM
Dry weight: 102.7lbs (46.6kg)

FR691V
Specifications:
Displacement: 726cm3 (44.3cu. in.)
Number of Cylinders: 2
Bore x Stroke: 3.1 x 3.0 in. (78 x 76mm)
Compression Ratio: 8.2:1
Oil capacity: 2.2U.S. qt (2.1liters)
Maximum Power: 23.0hp (17.2kW) at 3,600rpm
Maximum Torque: 39.5ft lbs (53.6Nｷm) at 2,200RPM
Dry weight: 89.0lbs (40.4kg)

Zeroturner · Aug 15, 2014

Nwatson99,

I just got back to this thread and the information you provided is just what I was looking for.

Thank you very much!

Nwatson99 · Aug 15, 2014

Zeroturner said:
Nwatson99,

I just got back to this thread and the information you provided is just what I was looking for.

Thank you very much!

You are very welcome, let us know what you go with. :thumbsup:

FR691V Kawasaki Engine vs. other Kawasaki Engines

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