Ranger: Seat goes down unintentionally

Issue: The seat reclines unintentionally under a rider without pressing the control lever
Solution: Check all the parts of the reclining mechanism

WARNING!
The gas spring contains highly pressurized gas, which can be dangerous if mishandled. Improper handling may damage the gas spring's seal or cause disassembly, resulting in the sudden release of compressed gas, which could lead to injury. KUBERG recommends, that this adjustment be carried out by a qualified bicycle or motorcycle service center.

NOTE:

Each numbered step below offers a possible solution. After completing each step, sit on the seat and check, whether it NOT reclines, when the control lever is NOT pressed.
Only proceed to the next step if the problem persists.
After the issue is resolved, fine-tune the lever's responsiveness using the adjustment bolt, located by the control lever on the handlebar. The bowden cable (the black hollow outer housing) should have 0.04 - 0.08" (1 - 2 mm) of play relative to the adjustment bolt.
The pictures included were taken with the seat removed for clarity, but all bolts and nuts are accessible without removing the seat.

Table of contents:

Check the bowden cable and the control cable
Inspect the bowden end caps
Check the handlebar adjustment bolt
Check the underseat adjustment bolt
Check the piston control arm
Check the piston adjustment

1. Check the bowden cable and the control cable

Required tool:

wrench #10
open wrench #30

Ensure the bowden cable and the control cable for the seat control is not twisted or bent between the handlebar lever and the adjustment bolt under the seat. A twisted or bent bowden cable can hinder the seat control function and may need replacing. This can be fixed at any bicycle shop using 36" (92 cm) of standard bicycle shifting bowden cable and the shifting cable.

2. Inspect the bowden end caps

Make sure, that the stainless steel covers at the ends of the bowden cable are not stuck:

On the edge of the adjustment bolt by the handlebar lever on the handlebar.
On the edge of the adjustment bolt under the seat.

The cable covers must fit inside both bolts. If they are stuck, the cable will preload and allow the gas spring to compress under load. Adjust the positioning of the end caps if necessary.

3. Check the handlebar adjustment bolt

Make sure, that the adjustment bolt by the handlebar control lever is not bolted out too far. If so, it may preload the control cable, allowing the gas spring to compress under load. The bowden cable should have 0.04 - 0.08" (1 - 2 mm) of play.

4. Check the underseat adjustment bolt

Make sure, that the adjustment bolt under the seat is not bolted out too far, as this can also preload the control cable. If necessary, use a wrench #10 to loosen the nut, then tighten the bolt by a few turns and retighten the nut. The bowden cable should still have 0.04 - 0.08" (1 - 2 mm) of play.

5. Check the piston control arm

The piston control arm under the seat, which the cable pulls, should have 0.04 - 0.08" (1 - 2 mm) of forward and backward clearance. If the piston can compress under the load in this state, the piston is probably damaged and requires a replacement.

6. Check the piston adjustment

If the piston control arm cannot be moved 0.04 - 0.08" (1 - 2 mm) by hand, follow these steps to adjust the piston:

a) Stand on the left side of the motorcycle and use Your left hand to hold the lower gas spring body. Then use Your right hand (or the open wrench #30) to loosen the upper gas spring cover a few turns by rotating from the bottom up.

CAUTION!
Be careful not to damage the adjustment bolt or nut.

b) Use your left hand to loosen the lower gas spring body a few turns – move from top to bottom. This will create a turning clearance on both sides of the gas spring.

c) Hold the upper gas spring cover in position with Your right hand, and bolt the lower gas spring body back into the frame using Your left hand. This will shorten the overhanging thread on the upper side and create the required clearance between the piston and the control arm

d) Hold the lower gas spring body in place with Your left hand and tighten the upper gas spring cover firmly with Your right hand or using the open wrench #30 (12 - 14 Nm)

e) Finally, use Your right hand to hold the upper gas spring cover in position and use Your left hand to firmly tighten the lower gas spring body back into the frame.

f) Double check, that all bolts and nuts are properly tightened!

If Your motorcycle is under warranty, please register it on our website, if You have not already done so:
https://www.kuberg.com/en/bike-registration

If the problem persists, please contact Your dealer or KUBERG customer service (support@kuberg.com). For the fastest possible resolution please send:

VIN of Your motorcycle (it is stamped on the right side of the steering column).
Detailed information on actions taken so far, a few photos and preferably a video.

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Ranger: Seat goes down unintentionally

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