JD 400 problems

Technical topics related to machines powered by Kioritz/CCW & Kohler motors.
jd400_21x
Posts: 18
Joined: Tue Jan 27, 2009 1:00 am
Location: North Dakota

JD 400 problems

Post by jd400_21x »

I have a 76 model 400 with a 340 kioritz and wlbro wra-31 carb. I replaced all fuel line cleaned carb and the tank added a fuel filter and even replaced the pickup in the tank. Then pulled and pulled to get fuel in the lines, when it started finally i warmed it up and rode it around the yard once went to go again and the motor would bog down when the throttle was open at all. Crank seals were checked with carb cleaner. The filter at first filled up to about 3/4 full at first now it only fills to about a 1/4 full of fuel. right now i am at a loss my 300 never gave me these problems.

Thanks in advance
JDFanPa
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Location: Mt. Cobb/Scranton.Pa.
Contact:

JD 400 problems

Post by JDFanPa »

Being a 76 with a plastic tank eliminates rust in the tank but you could still have crude blocking the pickup. It also doesnt take much to block up a fuel filter have you tried pulling it off sand blowing through it?
Rodimus Prime
Posts: 738
Joined: Sun Jul 24, 2005 12:00 am

JD 400 problems

Post by Rodimus Prime »

340/22 with small carb O.o
DLDeere
Posts: 275
Joined: Sun Feb 24, 2008 1:00 am
Real Name: Howard Olson
Location: Detroit Lakes MN

JD 400 problems

Post by DLDeere »

RP
340/22 with small carb O.o
?????????
Last edited by DLDeere on Thu Jan 29, 2009 2:05 am, edited 1 time in total.
DL Deere
Detroit Lakes, MN

73 JD 400, 500, JDX4, JDX8
74 JDX4 Special, JDX8
74 JD 295/S
75 800
76 Liquidator
77 Liquifire
78 Liquifire
80 Liquifire
80 Spitfire
83 Snowfire
jd400_21x
Posts: 18
Joined: Tue Jan 27, 2009 1:00 am
Location: North Dakota

JD 400 problems

Post by jd400_21x »

Fuel pick up is fine replaced gasket around it five minutes ago still no change it starts and idles fine and will rev up barely enough to engage the clutch after that it bogs out so i guess I'm still looking for some more advice.
Thanks
Rodimus Prime
Posts: 738
Joined: Sun Jul 24, 2005 12:00 am

JD 400 problems

Post by Rodimus Prime »

340/400/440 usually have the 40 mm bore carbs ie wda
harleysportster
Posts: 2965
Joined: Thu Jul 14, 2005 12:00 am
Real Name: Pat Scott
Location: Southeast Pa.

JD 400 problems

Post by harleysportster »

jd400_21x wrote:I have a 76 model 400 with a 340 kioritz and wlbro wra-31 carb. I replaced all fuel line cleaned carb and the tank added a fuel filter and even replaced the pickup in the tank. Then pulled and pulled to get fuel in the lines, when it started finally i warmed it up and rode it around the yard once went to go again and the motor would bog down when the throttle was open at all. Crank seals were checked with carb cleaner. The filter at first filled up to about 3/4 full at first now it only fills to about a 1/4 full of fuel. right now i am at a loss my 300 never gave me these problems.

Thanks in advance
The carb should work. The filter at 1/4 full is normal. As they clog up they fill up more. Does your 340 have cdi ignition. If so, I would check the ohm readings for the high speed windings. The specs are found in the FAQ section.
'76 440 cyclone
'76 440 liquifire
'78 440 Cyclone
'75 JDX8 (sold to a member here)
'78 Liquifire(CrossCountry Clone)
'80 Liquifire(sold)
jd400_21x
Posts: 18
Joined: Tue Jan 27, 2009 1:00 am
Location: North Dakota

JD 400 problems

Post by jd400_21x »

So if I go out to the JD boneyard what WDA carb should I look for? As for the CDI box I will try to ohm it out but what and where are the wires i need to check & what should they read?
JDT
Posts: 5561
Joined: Wed Nov 21, 2007 1:00 am
Real Name: Todd
Location: Milbank South Dakota

JD 400 problems

Post by JDT »

There is a WRA-31 on ebay right now. Looks clean.

You can not really check a CDI with an OHM meter. But you can check your stator very easily with your meter.
There is a great write-up in the FAQ section on this procedure which will only that 10 minutes.

I am with Harley on this one... bad hi-speed winding on your stator.

You will find a NOS stator on a forum member e-Bay store.
Todd Schrupp

Milbank SD
jd400_21x
Posts: 18
Joined: Tue Jan 27, 2009 1:00 am
Location: North Dakota

JD 400 problems

Post by jd400_21x »

Just hooked the meter up to the yellow & green wires that go to the cdi box with the plug connected to the motor and got a 2.43ohm reading also i noticed there is a "o" type wire connector under the dash area with 3 black wires together in that connector, it is not hooked up to anything is that a problem. also i seem to have followed someone elses screw up with my fuel lines I use 5/16 lines except for my pulse line which is a 1/4 tygon. the fuel lines are tight and seem to seal up so mybe not a problem but I guess I could use some more input.
Thanks
jd400_21x
Posts: 18
Joined: Tue Jan 27, 2009 1:00 am
Location: North Dakota

JD 400 problems

Post by jd400_21x »

also how was i supposed to test the stator i couldn't find anything but wiring schematics here maybe i just looked at the wrong spot.
JDT
Posts: 5561
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Real Name: Todd
Location: Milbank South Dakota

JD 400 problems

Post by JDT »

Go to the FAQ section. there it is under "testing CDI Kioritz"
Todd Schrupp

Milbank SD
harleysportster
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Real Name: Pat Scott
Location: Southeast Pa.

JD 400 problems

Post by harleysportster »

'76 440 cyclone
'76 440 liquifire
'78 440 Cyclone
'75 JDX8 (sold to a member here)
'78 Liquifire(CrossCountry Clone)
'80 Liquifire(sold)
JDT
Posts: 5561
Joined: Wed Nov 21, 2007 1:00 am
Real Name: Todd
Location: Milbank South Dakota

JD 400 problems

Post by JDT »

Harley is that what you posted last night that did not work for me?
Todd Schrupp

Milbank SD
harleysportster
Posts: 2965
Joined: Thu Jul 14, 2005 12:00 am
Real Name: Pat Scott
Location: Southeast Pa.

JD 400 problems

Post by harleysportster »

I really don't remember, I thought you were having trouble with the from the online catalog of the electric start kit.
'76 440 cyclone
'76 440 liquifire
'78 440 Cyclone
'75 JDX8 (sold to a member here)
'78 Liquifire(CrossCountry Clone)
'80 Liquifire(sold)
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