ETA 7750-8356 Cam Jumper

Quantity	Discount (%)	Price
1 - 2	—	$4.00
3 - 4	5 %	$3.80
5 - 9	7 %	$3.72
10 - 14	10 %	$3.60
15+	15 %	$3.40

Quantity

Discount (%)

Price

1 - 2

—

$4.00

3 - 4

5 %

$3.80

5 - 9

7 %

$3.72

10 - 14

10 %

$3.60

15+

15 %

$3.40

Product Description

Quantity	Discount (%)	Price
1 - 2	—	$4.00
3 - 4	5 %	$3.80
5 - 9	7 %	$3.72
10 - 14	10 %	$3.60
15+	15 %	$3.40

Genuine ETA 7750-8356 Cam Jumper, Made in Switzerland, brand new — the original factory spring-loaded component for the ETA/Valjoux 7750 chronograph movement’s cam-switching mechanism. Precisely engineered to apply spring tension that locks the chronograph cam into its precise stop positions, the Cam Jumper ensures reliable sequencing of start, stop, and reset operations. An essential replacement part for restoring faulty or fatigued cam jumper during movement service. Original ETA part — the professional’s choice for genuine chronograph sequencing restoration.

Features & Function

Genuine ETA 7750-8356 — original Swiss-made factory part, brand new, authentic, part number 7750-8356

Cam jumper — spring-loaded component that locks the chronograph cam into precise stop positions during the operating cycle

Reliable sequencing — ensures the chronograph cycles through start, stop, and reset in the correct order

Precision spring tension — engineered to provide consistent locking force without overloading the cam mechanism

Original factory quality — exact spring specifications for perfect fit in the ETA/Valjoux 7750 movement

Specifications

Parameter	Value
Brand	ETA (Swatch Group)
Part Number	7750-8356
Component	Cam Jumper
Compatibility	ETA/Valjoux 7750 Chronograph Movement
Origin	Made in Switzerland
Type	Original Factory Part (Genuine ETA)
Function	Spring-loaded locking of chronograph cam for reliable start/stop/reset sequencing
Packing	Original Packing
Condition	Brand New / Genuine ETA

Parameter

Value

Brand

ETA (Swatch Group)

Part Number

7750-8356

Component

Cam Jumper

Compatibility

ETA/Valjoux 7750 Chronograph Movement

Origin

Made in Switzerland

Type

Original Factory Part (Genuine ETA)

Function

Spring-loaded locking of chronograph cam for reliable start/stop/reset sequencing

Packing

Original Packing

Condition

Brand New / Genuine ETA

Applications

Replacement of worn, fatigued, or broken Cam Jumper in the ETA/Valjoux 7750 movement

Repair of chronograph sequencing failures: chronograph not resetting properly, start/stop misalignment

Repair of spring-related issues: cam jumping erratically, failure to lock in stop positions

Professional movement service, overhaul, and chronograph restoration

Certified watchmaker and service center parts supply

FAQ

Q1: Is this a genuine ETA part?
A: Yes — this is a genuine ETA 7750-8356 Cam Jumper, Made in Switzerland, brand new. It is an original factory part from ETA (Swatch Group), the world’s leading movement manufacturer. Not a generic or replica part.

Q2: How do I confirm this part fits my movement?
A: Confirm your movement is an ETA/Valjoux 7750 chronograph. The part number 7750-8356 is the specific Cam Jumper for this movement. Common brand applications include: IWC Portugieser Chronograph, Omega Speedmaster (older 7750 variant), Tag Heuer Monaco, Breitling Navitimer, and many other chronographs using the Valjoux/ETA 7750 platform.

Q3: What does the Cam Jumper do in the chronograph?
A: The Cam Jumper is a spring-loaded lever that locks the chronograph cam into precise stop positions during the operating cycle. The chronograph cam (mounted on the minute wheel) has raised steps and recesses that correspond to the start, stop, and reset positions. The Cam Jumper snaps into each cam step with spring pressure, providing positive tactile feedback and ensuring the chronograph advances through its sequence in the correct order. Without a functioning cam jumper, the cam can drift or skip positions, causing the chronograph to misfire, reset erratically, or fail to lock in the stop position.