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morgaj1
04-17-2010, 10:40 PM
I have been doing a little research in helping a family member buy a new mower. I am trying to tell the difference between the series of Kawasaki motors. Their website is fairly ambiguous. Here is the best that I have come up with:

FR - Homeowner series
FH- Standard Commercial Series
FH-KAI - Same as FH, but with heavier duty air filtration
FX- Top of the line Commercial Series with heavy duty air filtration and an larger oil cooler.
FS - ???

Any additional information or corrections would be most helpful.

Sfloyd
04-18-2010, 08:40 AM
I wish I knew. I have been trying to decipher that same thing and information is sketchy at best.

Steve

MikeKle
04-18-2010, 09:43 AM
My FH-KAI engines dont have heavy duty air filters??? What about FC, as in FC 420V

topsites
04-18-2010, 10:02 AM
Kasawookis are a good product that yet manages to be overrated and is still overpriced.
Honda is another that's just ridiculous.

They are good engines, but wth...

MikeKle
04-18-2010, 10:07 AM
Kasawookis are overrated and thus overpriced.

And I stopped JUST short of saying it Kawasoo...

Overrated and overpriced, YES, but Im curious if my FH KAI engines shouldve come with the heavy duty air filter, and somewhere along the line, they got fitted with the regular air filters instead?

topsites
04-18-2010, 10:10 AM
Overrated and overpriced, YES, but Im curious if my FH KAI engines shouldve come with the heavy duty air filter, and somewhere along the line, they got fitted with the regular air filters instead?

Have you tried contacting Kawasaki about this?

Lazer_Z
04-18-2010, 10:30 AM
Mike, does your engine look like this http://www.kawpowr.com/engines/detail.aspx?id=27&cat_id=6 ?

MikeKle
04-18-2010, 11:05 AM
Yeah, that is it, Is that considered the heavy duty air filter? I thought that was the standard one?

morgaj1
04-18-2010, 11:15 AM
Mike, I don't know if the info that I have is correct. This is my interpretation of the ambiguous info on Kawasaki's site. It does not say "heavy duty" air filtration, it says "redesigned air cleaner and blower housings." Here is a link to Kawasaki's webpage on the FH-KAI engines:

http://www.kawpowr.com/engines/series.aspx?id=6

morgaj1
04-18-2010, 11:17 AM
Also, Kawasaki does not refer to their air filtration system as heavy duty. Ie, the FX series info says "dual stage canister air filter", which in my opinion, is heavy duty.

fredmullegun
04-18-2010, 02:34 PM
I was also wondering about this since exmark now puts FS series engines on their Metro line.

http://www.lawnsite.com/showthread.php?t=313127

Alan0354
04-18-2010, 05:07 PM
Mike, I don't know if the info that I have is correct. This is my interpretation of the ambiguous info on Kawasaki's site. It does not say "heavy duty" air filtration, it says "redesigned air cleaner and blower housings." Here is a link to Kawasaki's webpage on the FH-KAI engines:

http://www.kawpowr.com/engines/series.aspx?id=6

I follow the site and I don't interprete the way you did. I see different sizes engine and/or V twins etc. I did see FJ180 without vs FJ180 KAI with oil filter.

morgaj1
04-18-2010, 07:39 PM
I follow the site and I don't interprete the way you did. I see different sizes engine and/or V twins etc. I did see FJ180 without vs FJ180 KAI with oil filter.


My point exactly. The description is ambiguous and open to interpretation. I wish they would put a chart showing the different engine series and the differences. It would also be helpful if they labeled the series with consumer applications.

Alan0354
04-18-2010, 08:16 PM
My point exactly. The description is ambiguous and open to interpretation. I wish they would put a chart showing the different engine series and the differences. It would also be helpful if they labeled the series with consumer applications.

Maybe they are all commercial quality. For example, they don't have anything for 21" wb mower other than the commercial FJ180 KAI. For that, it has cast lining and all, it is a true commercial engine. I don't know of anything consummer quality Kawi engine used in consummer products. All the bigger mowers uses Kawi are commercial mowers. They don't seems to be like Honda that have the GC engine for consummer and GX for pros.

morgaj1
04-18-2010, 08:33 PM
Maybe they are all commercial quality. For example, they don't have anything for 21" wb mower other than the commercial FJ180 KAI. For that, it has cast lining and all, it is a true commercial engine. I don't know of anything consummer quality Kawi engine used in consummer products. All the bigger mowers uses Kawi are commercial mowers. They don't seems to be like Honda that have the GC engine for consummer and GX for pros.

That's a good point. Even the FR691V (listed as consumer by Kawasaki) that is on my father-in-law's Husqvarna lawn tractor has the same piston and heads as the FX691V on my Gravely ZTR.

MikeKle
04-18-2010, 09:23 PM
Somebody recently told me what the KAI is for, but I cant recall what it was now?

mjschue
04-18-2010, 09:38 PM
When I recently attended a Kawasaki service school they told us all Kawi engines were of the same quality block, rods, pistons. The main differences were charging systems and accessories. I.E. air filters etc.

Lazer_Z
04-19-2010, 09:16 AM
Also, Kawasaki does not refer to their air filtration system as heavy duty. Ie, the FX series info says "dual stage canister air filter", which in my opinion, is heavy duty.Mike, What is said here is what I would call heavy duty. Mike, this is what I'd consider a heavy duty air filter http://www.kawpowr.com/engines/detail.aspx?id=46&cat_id=5

MikeKle
04-19-2010, 09:26 AM
Mike, What is said here is what I would call heavy duty. Mike, this is what I'd consider a heavy duty air filter http://www.kawpowr.com/engines/detail.aspx?id=46&cat_id=5

That is what I consider heavy duty too. but since my FH580V has the piece of foam wrapped around the paper filter, maybe that qualifies it to be called heavy duty? I didnt know they put canister air filters on engines smaller than 19hp either? That one was a 16hp.

Lazer_Z
04-19-2010, 09:46 AM
I didn't know they did that either, I have this engine on my mower http://www.kawpowr.com/engines/detail.aspx?id=16&cat_id=3 . That has the flat filter, the newer engines that I've seen are the KAI, I haven't see any with the engines like the one mounted on this eXmark Viking http://exmark.com/viking.htm .

pugs
04-19-2010, 10:47 AM
http://www.lawnsite.com/showthread.php?t=313127

morgaj1
04-19-2010, 11:18 AM
http://www.lawnsite.com/showthread.php?t=313127

Thanks pugs, that is the most information that I have seen.

icobob
04-19-2010, 04:07 PM
I have the FH601V and it has the heavy duty canister type filter. Hustler Mini Z

fredmullegun
04-20-2010, 05:22 PM
Thanks pugs, that is the most information that I have seen.

Dude?

http://www.lawnsite.com/showpost.php?p=3526643&postcount=11

heather lawn sp
04-20-2010, 06:32 PM
FD series Liquid cooled. V is twin cylinder rad horizontal, D is twin cylinder rad at the back side vertical
We had a FD580v 19-20 hp in a heavy residential, 1994, 2000 hour-ed John Deere F725 out front 54" mower. rebuilt 3 times

We re-engined to a 2009 FD731V, 26 hp, without too many modifications. All the mounts were in the same place as the smaller engine. Crankshaft same diameter, pulleys went right back on. Biggest deal was the dipstick on the opposite side, engine 1 inch taller.

heather lawn sp
04-20-2010, 06:45 PM
FD series Liquid cooled. V is twin cylinder rad horizontal, D is twin cylinder rad at the back side vertical
We had a FD580v 19-20 hp in a heavy residential, 1994, 2000 hour-ed John Deere F725 out front 54" mower. rebuilt 3 times

We re-engined to a 2009 FD731V, 26 hp, without too many modifications. All the mounts were in the same place as the smaller engine. Crankshaft same diameter, pulleys went right back on. Biggest deal was the dipstick on the opposite side, engine 1 inch taller.

V vertical shaft
D horizontal shaft

morgaj1
04-20-2010, 08:40 PM
Dude?

http://www.lawnsite.com/showpost.php?p=3526643&postcount=11

Sorry Fred, must have missed it the first time you posted it...

CptNut
09-23-2012, 05:22 PM
Does anyone know if its possible to swap out the canister style air filter from the FX series motor onto an FR motor? (Or if its been done already by someone)

As others have mentioned in this thread one of the primary differences b/w the FR and FX is the heavy duty canister air filter so I was curious if it was possible to replace the FR air filter with the FX canister style setup.

Thanks,
Brian

morgaj1
09-23-2012, 06:01 PM
Does anyone know if its possible to swap out the canister style air filter from the FX series motor onto an FR motor? (Or if its been done already by someone)

As others have mentioned in this thread one of the primary differences b/w the FR and FX is the heavy duty canister air filter so I was curious if it was possible to replace the FR air filter with the FX canister style setup.

Thanks,
Brian

The other difference is that the FR series has a single-barrel carb and the FX series has a double-barrel carb. Don't know how the canister filter setup would affect airflow on the single-barrel carb.