Getting a Fresh Fuel Line Onto Your 2017 Suzuki DRZ70
Shop parts for a 2017 Suzuki DRZ70 Dirt Bike.
A cracked fuel line seems trivial until it strands you at the far end of a trail or drips onto a hot pipe. On a 2017 Suzuki DRZ70, the fuel line is a short, inexpensive piece of rubber doing a job with zero tolerance for failure — and replacing it is well within reach with basic hand tools and about half an hour.
Know the DRZ70 Fuel Layout First
The 2017 Suzuki DRZ70 runs a carbureted fuel system, which works in your favor. Fuel leaves the tank through a petcock — the small valve underneath — travels down a short rubber hose, and enters the carburetor at the float bowl inlet. You can shut fuel off at the source, and the line is a simple two-clamp affair with no pump pressure behind it.
Why This Part Wears Out at All
It helps to treat fuel line as a consumable rather than a permanent part. The material is engineered to stay soft and seal against a barbed fitting, and it loses that ability gradually as heat cycling, sun exposure, and plain calendar age push it the same direction — a dry climate does it fastest. Fuel chemistry compounds the problem. Ethanol blends sitting through a long off-season absorb water and begin to separate, which is harder on rubber than fresh fuel and leaves gum behind. On a 2017 Suzuki DRZ70 stored more than ridden, that combination is the usual culprit.
How a Failing Line Announces Itself
Fuel line problems show up two ways: something you see and smell, or something you feel while riding. Both are worth taking seriously on a DRZ70.
- Evidence on the ground. A drip or dark patch under the bike after it sits overnight.
- The smell of raw gasoline. Noticeable with the engine cold and unrun.
- Surface cracking on the hose. Especially at bends and where the line slides over fittings.
- Weeping under light pressure. Push gently near a fitting and watch for moisture at the joint.
- Fuel starvation symptoms. Bogging or cutting out as though the tank ran dry when it clearly has not.
Tools & Preparation
Assemble everything first. Once the line is off, you do not want to be driving to the parts store with an open fuel system.
- Replacement fuel line in the correct inside diameter and length for your 2017 Suzuki DRZ70. Match the original rather than guessing — oversized line will not seal on the barb.
- New clamps. Spring clamps lose tension with age, and a small clamp kit costs very little.
- Nitrile or rubber gloves. Gasoline absorbs through skin.
- A fuel-safe drain container and a funnel if you plan to reuse the fuel.
- Pliers and a small flat screwdriver for spring and screw clamps respectively.
- Shop rags and eye protection.
Before the first fitting comes loose, handle the safety side. Gasoline vapor pools low and finds ignition sources you would never consider, including pilot lights across the room. Ventilate properly, keep fuel in a closed container, wear eye protection, and never open the system on a hot engine.
Getting the Old Line Out of the Way
Shut the petcock off first. That single step keeps this job clean on a carbureted DRZ70 — with the valve closed, the tank stays full and the only fuel to manage is what is already past the valve.
Empty the carburetor next. Attach a length of clear hose to the float bowl drain nipple, direct it into your container, and open the drain screw. A minute later the bowl is dry and you can work without fuel running down your arm.
With the fuel handled, address the clamps at each end. Squeeze spring clamp tabs together with pliers and walk the clamp down the hose, or loosen a screw clamp with a driver. The hose is usually the hard part: years of heat cycling effectively glue it to the barb. Twist first to break the bond, then pull straight off. When a line is badly hardened, cutting it off with a razor blade is safer for the fitting than prying at it.
Getting the New Line Seated Properly
Use the removed hose as your measuring stick and cut the new one to match. On a 2017 Suzuki DRZ70 the correct length stays clear of moving and hot components while still absorbing engine movement without pulling on either fitting. Square off both ends with a sharp blade.
Start at the petcock. Work the hose on until the barb is fully buried — a partial seat is the most common cause of a post-repair leak. Warming a stiff hose helps it slide; lubricating the fitting does not. Leave grease and oil out entirely, since either prevents the rubber gripping properly and can end up inside the carburetor.
Then connect the carburetor side and dry-fit before clamping. Mount the tank if it was removed and verify the hose is not trapped, stretched, or resting on the head. Once the routing looks right, place a clamp at each end over the fitting itself and bring it to snug. New spring clamps are hard to overdo; screw clamps need restraint.
Confirming It Is Sealed
Open the fuel valve and let gravity do the testing. Give the DRZ70 a few minutes standing over clean cardboard, then inspect the tank-side and carburetor-side joints carefully. Wipe each dry first so new moisture is unmistakable.
Follow that with a running check. Start the engine, bring it to temperature, and look at both fittings again at idle — some leaks only appear once heat and vibration are in the system. A joint weeping under those conditions has a seating problem, not a clamp problem; pull it apart and push the hose fully home.
Then clean up and stay attentive for a ride or two. Dispose of old fuel properly, watch the clamps as the new rubber settles, and consider replacing an inline filter while the system is open. Anyone wanting more detail on what shortens fuel line life long term will find it in our evergreen guide to fuel line care and replacement.
Related Shopping Categories
Shop Fuel Lines for a 2017 Suzuki DRZ70 Dirt Bike.
Shop Fuel Line Clamps for a 2017 Suzuki DRZ70 Dirt Bike.
Shop Petcocks for a 2017 Suzuki DRZ70 Dirt Bike.
Shop Fuel Filters for a 2017 Suzuki DRZ70 Dirt Bike.
Shop Fuel Stabilizer for a 2017 Suzuki DRZ70 Dirt Bike.
Disclaimer: This guide is provided for general informational purposes only and is not intended to replace your dirt bike's official owner's manual. Always refer to your manufacturer's documentation for model-specific instructions, torque specifications, safety procedures, and maintenance requirements. If you are unsure or inexperienced, consider seeking assistance from a qualified mechanic or technician.