Dynojet 1139.005 User manual

Thank you for purchasing this Dynojet

kit. This kit has been developed for a

motorcycle which is set to the

parameters listed at the right in the

“Stage” description. If your motorcycle

does not meet any of these parameters

please check with Dynojet before

installation. For technical assistance

contact your Dynojet distributor or call

Dynojet U.S.A. (800)-992-4993

2191 Mendenhall Dr. Suite 105

North Las Vegas, NV 89031

TEL: 702-399-1423

FAX: 702-399-1431

8am-5pm Pacific Time

Monday through Friday

Website Address

http://www.dynojet.com

The manufacturer and seller make no

warranties express or implied which

extend beyond the description of the

goods contained herein. Any description

of this product is for the purpose of

identifying it and shall not be deemed to

create an express warranty.

1139.005

U.S Models Only

1990-93 Honda VFR750F

Stage 1

For mildly tuned machines using the stock airbox,

with stock or K&N filter.

May also be used with a

good aftermarket exhaust. K&N Filter #HA-0003

This graph shows a typical gain with a Dynojet jet kit.

WARNING

NO SMOKING!

NO OPEN FLAME!

WHILE INSTALLING

YOUR DYNOJET KIT

4Main Jets DJ120

4Main Jets DJ124

4Needle Shrouds DNJT02

4Fuel Needles DNO307

1Tool DT007

1Slide Drill DD #7/64

1Glue DA0001

4Adjusting Washers DW0001

4E-Clips DE0001

Parts List

1139.005

STAGE ONE INSTRUCTIONS

Fig. A Fig. B

SLIDE LIFT HOLES

NEEDLE HOLE

Place E-clip

in groove #3

from the top

1. Remove the vacuum slide from the carbs. Remove the stock needles & spacers,

noting the order of assembly. Locate the slide lift holes using (Fig. A). Using the

DD#7/64 drill bit provided drill both slide lift holes.

2. Locate the Dynojet part# DNJT02 supplied. With cutaway facing up and to the

engine (Fig. B), use the shroud tool provided (DT007) to press over stock needle

jet. Before pressing down add a touch of glue to the outer base of the stock needle

jet, then press down. Check to make sure there is no excess glue visible.

3. Install the Dynojet needles on groove #3, using all stock spacers. Install the

Dynojet washers above the E-clip.

4. Remove the stock main jets and replace with Dynojet main jets provided. If

you are running the stock exhaust use the DJ120 main jets, if you are running

an aftermarket header or slip-on with high flowing baffle, use the DJ124 main jets.

Be sure that the jet you are changing is the main jet.

5. Locate the fuel mixture tab (Fig. C), carefully turn mixture tab clockwise until

they seat, turn out 2 turns.

Fig. C

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