VintageCB750 Supplying CB Riders Since 2010

About Us Why Us? Reviews Shipping Info Returns Contact Us
Wish Lists
0 My Cart

Your cart is currently empty.

Browse all parts
Total (USD): $0.00
View cart
Menu
Search
Wish
Cart 0
My motorcycle Choose your Honda CB model

Search parts

Searching all Honda CB parts

Example: brake pads or oil filter.

1986 Honda CB700SC Tank Cushions & Fuel-Valve Parts

For the 1986 CB700SC tank area, identify whether the work concerns mounting rubber or the fuel valve. The front cushion is an individual replacement, while the petcock kit includes specified internal service parts. Compare the tank and valve actually fitted before placing the order.

Close ×
Your saved bike Choose your Honda CB model

Shop By Category

Most orders ship same or next business day Fitment guarantee Listed for your exact model and year? We’ll make it right if it doesn’t fit as described. Mechanic-backed support Ask our team for help choosing the right Honda CB part.
Currently viewing Gas Tanks, Caps, Petcocks & Parts

Honda motorcycle parts

Choose your model and year to see parts listed for your bike.

Honda CB front fuel tank rubber cushion 17611-KE8-000

Front Fuel Tank Rubber Cushion ~ Replaces Honda OEM 17611-KE8-000

$5.50 USD
27-5520
This aftermarket front fuel tank rubber cushion replaces Honda OEM 17611-KE8-000 on the listed Honda CB-series applications. It mounts to the frame and supports...
Sold out
Honda CB700 CB650 CB550 CB450 fuel petcock repair kit

Honda CB700 / CB650 / CB550 / CB450 Fuel Petcock Repair Kit

$27.95 USD
20-0020
Rebuild your Nighthawk fuel petcock with this Fuel Petcock Repair Kit. Includes a diaphragm, spring, and 2 O-rings.Key Features• Fuel petcock repair kit• Includes...
compare

1986 Honda CB700SC · Tank Cushions & Fuel-Valve Parts Buying guide

Check the vacuum valve while the tank is off

The 1986 CB700SC tank uses front rubber supports and a vacuum-operated fuel valve. Worn mounting rubber and poor fuel flow call for different repairs, but tank removal is a useful time to inspect the supports, fuel line, vacuum connection and strainers together.

Parts to consider

Front Fuel Tank Rubber Cushion ~ Replaces Honda OEM 17611-KE8-000 Aftermarket front tank cushionSold individually; replaces Honda reference 17611-KE8-000 for the listed CB700SC tank mount.View part Honda CB700 / CB650 / CB550 / CB450 Fuel Petcock Repair Kit Fuel-petcock repair kitContains a diaphragm, spring and two O-rings for the listed Nighthawk petcock.View part

Support the tank without confusing cushion types

The featured front cushion is an aftermarket replacement for Honda reference 17611-KE8-000. One is supplied; two renew the left and right front supports on the listed stock arrangement. Inspect the rear mounting area as well. If the tank or frame mounts have changed, match the actual support shape rather than relying on the motorcycle’s original model label.

Test the valve and inspect its strainers

Honda’s diaphragm test checks for shutoff without vacuum and fuel flow with a hand vacuum pump. Restricted flow also calls for strainer inspection. The manual covers the screen in the fuel cup and the strainer at the tank outlet; replacing diaphragm parts does not clean either one. The kit lists a diaphragm, spring and two O-rings, so confirm those contents against the valve being serviced and check for leaks after reassembly.

Buying questions

Should the original petcock pass fuel in ON with no vacuum applied?

In Honda’s disconnected-outlet test it should not. Fuel flowing before vacuum is applied points to a diaphragm problem. Use the manual’s hand-pump procedure in a ventilated work area away from ignition sources, and verify both shutoff and flow after repair.

Can a diaphragm kit cure every fuel-flow restriction?

No. Honda also calls for inspection of the fuel strainers when flow is restricted. Check the cup screen, tank-outlet strainer and fuel line, and identify damage in the valve body. A diaphragm-and-seal kit neither replaces a damaged housing nor clears contaminated screens by itself.

Why inspect the hoses after replacing tank cushions?

Tank removal disturbs the fuel line and the vacuum line that operates the petcock. Check that both are connected correctly and free from damage or trapping when the tank is refitted. Renewing the rubber supports alone does not verify fuel flow or leak-free hose connections.

Not sure which part you need?

Send your model and year, plus photos of your existing part and any changes to the original setup.

Ask a fitment question
Parts categories for 1986 Honda CB700SC

Your cart

×